Learn how to solve longest increasing subsequence (LIS). Explore brute-force, DP, and binary search solutions with code examples.

Longest Increasing Subsequence (LIS) Explained

Learn Dijkstra’s algorithm with step-by-step example, Python implementation, time complexity, and real-world applications.

A Complete Guide to Dijkstra’s Shortest Path Algorithm

Master breadth-first search (BFS) with this beginner-friendly guide. Explore its algorithm, implementation, time complexity, and real-world applications.

Breadth-First Search (BFS) Algorithm Explained

Explore the doubly linked list in depth — understand its definition, basic operations, implementation, comparison with singly linked lists, and real-world uses.

Doubly Linked List: Complete Guide & Implementation

Interested in the fundamentals of computer science with Python? This path offers a flexible and accessible method for learning computer science whether you’re interested in studying CS or looking to level up your theoretical knowledge for technical screens.

Looking for an introduction to the theory behind programming? Master Python while learning data structures, algorithms, and more!

Computer Science

Once you have a strong foundation in JavaScript, the next step is going pro. In this skill path, we’ll teach you the advanced coding skills you need to land a job — along with tips and tricks that will help you nail the technical interview. Learn about data structures and algorithms and dive into more advanced topics like algorithmic complexity and dynamic programming.

Learn about the computer science concepts of data structures and algorithms and build implementations from scratch in modern JavaScript.

Pass the Technical Interview with JavaScript

Once you have a strong foundation in Java, the next step is going pro. In this skill path, we’ll teach you the advanced coding skills you need to land a job — along with tips and tricks that will help you nail the technical interview. Learn about data structures and algorithms and dive into more advanced topics like algorithmic complexity and dynamic programming.

Learn about the computer science concepts of data structures and algorithms and build implementations of each from scratch in modern Java.

Pass the Technical Interview with Java

Once you have a strong foundation in Python, the next step is going pro. In this skill path, we’ll teach you the advanced coding skills you need to land a job — along with tips and tricks that will help you nail the technical interview. Learn about data structures and algorithms and dive into more advanced topics like algorithmic complexity and dynamic programming.

Learn about the computer science concepts of data structures and algorithms and build implementations of each from scratch in modern Python.

Pass the Technical Interview with Python


The C programming language was first released in 1972, making it one of the oldest still used today. All modern operating systems are implemented with C code, which means that the C language powers almost every technological experience we have. Python's interpreter is also written in C. Get started learning C fundamentals to become a better programmer in any field of computer science.




Learn about the C programming language in this beginner-friendly skill path.

Learn C

### About this course
Technical interviews are crucial for landing a job in tech, but with the proper preparation, you can succeed. This course focuses on common interview problems you'll encounter, helping you grow as a programmer and problem solver. These skills will improve your coding efficiency even if you're not preparing for an interview.

### Skills you'll gain
* Solve common technical interview problems
* Write cleaner, more efficient code
* Prepare for coding interviews with confidence

Hone your coding skills by practicing with industry standard technical interview problems!

Technical Interview Practice with Python

### About this course

Popular for its versatility and ability to create a wide variety of applications, learning Java opens up your possibilities when coding. With it, you’ll be able to develop large systems, software, and mobile applications — and even create mobile apps for Android. Learn important Java coding fundamentals and practice your new skills with real-world projects. 

### Skills you'll gain

* Build core programming concepts
* Learn object-oriented concepts
* Create Java projects

Learn to code in Java — a robust programming language used to create software, web and mobile apps, and more. 

Learn Java

### About this course
Explore complex data structures that simplify advanced operations through abstraction. This course delves into abstract data structures, solving problems beyond linear iteration. You'll learn how these structures solve nuanced challenges and prepare you for solving complex algorithmic problems.

### Skills you'll gain
* Understand and implement abstract data structures
* Solve advanced algorithmic problems like path-finding
* Maintain and manage priority queues

Discover and design new data structures that follow abstract rule-based systems by building out graphs, hash-maps, and heaps.

Learn Complex Data Structures

### About this course
In this course, you’ll dive into sorting algorithms, one of the most fundamental operations in computer science. Sorting is essential for organizing data and improving search efficiency, making it a vital skill for anyone dealing with large amounts of data. You’ll also gain the necessary knowledge for coding interviews.

### Skills you'll gain
* Implement and analyze various sorting algorithms
* Learn the efficiency of different sorting methods
* Understand the inner workings of sorting algorithms

Learn about the usefulness and efficiency of computational sorting by implementing different sorting algorithms yourself.

Learn Sorting Algorithms with Python

### About this course
CircuitPython is a beginner-friendly language that simplifies experimenting with hardware devices. Ideal for those with Python knowledge, it makes learning and creating with microcontroller boards easy. This course guides you through simple projects and more advanced features like audio output and touchpads.

### Skills you'll gain
* Light up LEDs and use buttons
* Explore audio output and touchpads
* Build projects like a Bike Light, Plant Care, and Drum Machine

Learn how to code for various electronic devices in this introduction to hardware programming with CircuitPython.

Learn Hardware Programming with CircuitPython

### About this course
The C# programming language offers flexible and comprehensive libraries that make it easy to work across operating systems. That’s why it’s widely used by companies like Microsoft and Stack Overflow. Whether you want to develop websites, apps, video games, or virtual reality, building your foundation is key. In this course, you’ll learn C# basics so you can become a more versatile programmer. 

### Skills you'll gain
* Use core C# programming concepts 
* Write your own C# programs
* Create and traverse arrays and lists

Learn Microsoft's popular C# programming language, used to make websites, mobile apps, video games, VR, and more.

Learn C#

### About this course
Blockchain is a powerful technology with applications in cryptocurrency, healthcare, insurance, government, music, identification, supply chain, data management, and much more. By learning blockchain basics, you’ll gain an understanding of the fundamental mechanisms that power it, join the conversation, and discover blockchain uses in your own life and work.

### Skills you'll gain
- Understand what blockchain is
- Learn blockchain structure
- Create your own blocks

Learn beginner blockchain concepts and create your own mini blockchain using Python 3 code.

Learn the Basics of Blockchain with Python

### About this course
This course introduces you to the powerful concept of recursion, helping you solve problems by breaking them down into smaller, manageable subproblems. Learn how to apply recursion across different programming languages to create efficient, elegant solutions. By the end, you'll have the skills to tackle recursive challenges with ease.

### Skills you'll gain
* Understand and apply recursion in problem-solving
* Break complex tasks into simpler subproblems
* Write clean, efficient recursive functions
* Use recursion to solve code challenge and whiteboarding problems

Recursion gives you a new perspective on problem-solving by defining a problem in terms of itself.

Learn Recursion with Python

### About this course

If you’re looking for a programming language that’s flexible and easy to read, try learning Python. It’s one of the most popular languages today, and programming in Python is used for everything from web and software development to data science and analytics to quality assurance. 

### Skills you'll gain

* Write Python 3 programs
* Simplify the code you write
* Take your skills off-platform

Learn the basics of Python 3.12, one of the most powerful, versatile, and in-demand programming languages today.


Learn Python 3

### Why Learn Search Algorithms?

Optimizing your approach for each search in your application makes your overall system more efficient. Proficiency in this topic will help prepare you for your next coding interview and will help you understand how data retrieval methods work.

### Take-Away Skills:

Ability to implement and analyze the performance of common search algorithms.

### Notes on Prerequisites:

A basic understanding of Python is required to implement these search algorithms.

Finding the data you are looking for in a data set is an important skill: get started with two common approaches.

How to Implement Search Algorithms with Python

#### About this course

With its adaptability and fast rendering, you’ll find the C++ programming language used everywhere, from web browsers to game development and operating systems to science and machine learning tools. This course will help you learn C++ basics and give you hands-on experience to create your own projects and work with computer memory.


#### Skills you'll gain

* Build core programming concepts
* Understand pointers and memory
* Build C++ projects

Learn C++ — a versatile programming language that’s important for developing software, games, databases, and more.

Learn C++

### About this course
Python is a general-purpose, versatile and popular programming language. It's great as a first language because it is concise and easy to read, and it is also a good language to have in any programmer's stack as it can be used for everything from web development to software development and scientific applications.

### Skills you'll gain
* Understand fundamental Python programming concepts 
* Practice Python syntax
* Create and use functions in Python

Learn the basics of the world's fastest growing and most popular programming language used by software engineers, analysts, data scientists, and machine learning engineers alike.

Learn Python 2

### About this course
Regular expressions (regex) are a versatile tool for working with strings and text patterns. Whether you’re searching for specific content, validating user input, or testing code, regex enables efficient pattern matching. This course will teach you how to build and apply regular expressions in various programming languages, empowering you to handle text-processing tasks with ease.

### Skills you'll gain
* Learn regex syntax, literals, and wildcards for pattern matching
* Use quantifiers, alternation, and anchors for flexible searches
* Apply grouping, shorthand classes, and ranges in regex

Get a taste of regular expressions (regex), a powerful search pattern language to quickly find the text you're looking for.

Learn the Basics of Regular Expressions

### About this course
This course is dedicated to programmers who are already familiar with the world of programming and are looking to get acquainted with the Java programming language. It’s designed to be a series of short, interactive articles that you can skim, dive into, or even skip. We did this so that you can use this course to both learn Java concepts and check as a reference guide.

### Skills you'll gain
- Learn basic Java syntax
- Use Java's data structures
- Try dynamic programming

Take this course meant for experienced programmers and learn Java, one of the world's most popular languages.

Java for Programmers

### About this course

Continue your Python 3 learning journey with Learn Intermediate Python 3. Intermediate Python 3 is a stepping stone to taking your skills to the next level. This course will provide you with the knowledge to make your Python code cleaner, more efficient, and more manageable. We’ll also dive under the hood of fundamental concepts that will deepen your understanding of the Python language.

### Skills you'll gain

- Use context managers
- Create custom iterators
- Use Python's Unittest library


Learn Intermediate Python 3 and practice leveraging Python’s unique features to build powerful, sophisticated applications.

Learn Intermediate Python 3

In this course, we will dive into discrete math, the math of computer science! Broadly speaking, discrete math is math that uses discrete numbers, or integers, meaning there are no fractions or decimals involved. In this course, you'll learn about proofs, binary, sets, sequences, induction, recurrence relations, and more! We'll also dive deeper into topics you've seen previously, like recursion.

Explore set operations, proofs, recursion, and more in this introduction to discrete math — the math of computer science!

Discrete Math

## 
In this course, you’ll learn about what the main physical components of a computer are, why 0 and 1 are such important numbers within computing, how instruction set architecture (ISA) establishes communication between the hardware and software components of a computer, and more. Starting from understanding how a computer works to learning about data-level parallelism, this course will teach you computer architecture with a combination of lessons, articles, quizzes, problem sets, and projects. At the end of the course, you'll be prompted to create your own CPU simulator in Python.

Learn about the rules, organization of components, and processes that allow computers to process instructions.

Computer Architecture

### About this course
Operating systems play a critical role in managing hardware, software, and system processes. This course offers an in-depth look into the core functions of an operating system, such as process scheduling, memory management, and file system organization. Understand how these components contribute to a computer's performance and usability.

### Skills you'll gain
* Understand the role of an operating system
* Manage processes, threads, and synchronization
* Explore memory and file system management
* Learn input/output systems

Learn about operating systems by taking a deep dive into each of its main functionalities.

Fundamentals of Operating Systems

### About this course
Are you a lover of Python 3 and looking to advance your skills in the language? This course is for you. We will dive into some advanced Python skills that will allow you to take your programming to the next level. Learn new paradigms that will give you the flexibility to create clean, effective code and make you a truly advanced Python 3 programmer.

### Skills you'll gain
- Debug software using logs
- Use concurrent programming
- Deploy scripts using Flask

Learn the basics of functional programming, concurrent programming, deployment, and more in this advanced Python course.

Learn Advanced Python 3

### About this course
This course is tailored for experienced programmers who want to quickly get up to speed with Python. It's structured in short, interactive articles you can skim, dive into, or use as a reference guide. Whether you're new to Python or need to refresh your knowledge, this course will help you develop a solid understanding of Python's core concepts and syntax.

### Skills you'll gain
* Understand Python syntax
* Work with arrays
* Learn object-oriented programming

An introduction to the basic syntax and fundamentals of Python for experienced programmers.

Python for Programmers

### About this course 
JUnit is a unit testing framework for Java that tests the functionality of an application to ensure it runs as expected. The “units” being tested are single entities, like classes and methods. Proper testing practices can not only keep code organized and maintain a solid direction, but it also ensures maintainability in the future and is friendly to a team-based setting. 

### Skills you'll gain 
* Implement the Assert class library 
* Write @Test, @Before, and @After methods 
* Run tests in your own environment 

Learn about JUnit testing, Java's open-source testing framework. 

Learn Intermediate Java: JUnit Testing

In this introductory course on Linux, we'll be learning about what Linux is exactly. We'll learn about its history and different versions of Linux.

We'll teach you how to set up Linux Ubuntu on your computer, and guide you through exploring the pre-installed apps, how to install apps, the Linux file system, and the role of server applications.

No introduction to Linux is complete without teaching the Linux shell, aka Bash! You will learn how to use text commands to navigate through a file system, view and change files, 

You'll learn how to use Bash commands and write Bash scripts that allow you to automate tasks and power up what we can do in Linux.

We'll also show you how to define Linux users and how to set permissions for files.

There are plenty of lessons, quizzes, and projects ahead, so let's get started!

In this introductory course, we'll be getting familiar with Linux and how to navigate within a Linux environment!

Introduction to Linux

### About this course
This course provides a beginner-friendly introduction to Information Technology (IT), covering essential concepts in computer systems, networking, software, and cybersecurity. Learn the fundamentals of IT and how it powers modern businesses and technology-driven industries.

### Skills you'll gain
* Understand computer basics and IT essentials
* Learn networking, operating systems, and applications
* Explore software development, databases, and cybersecurity

Take your first steps into the world of IT, or Information Technology! Introduction to IT will teach you about core IT subjects.

Introduction to IT

### About this course
Continue your Computer Architecture learning journey with Computer Architecture: Assembly Language. Learn about the Compilation Process and understand how your high-level code reaches your hardware. Write your own Assembly code and see how closely Assembly code maps to binary code.

### Skills you'll gain
- Write Assembly code
- Work with MIPS
- Perform operations in Assembly

### Notes on Prerequisites
We recommend that you complete [Computer Architecture: Instruction Set Architecture](https://www.codecademy.com/learn/computer-architecture-instruction-set-architecture) before completing this course.

Learn about Assembly languages and the role they play in computer architectures.

Computer Architecture: Assembly Language

### About this course
Continue your Git and GitHub learning journeys with Deploying Websites using Git and GitHub. Learn how to use GitHub Pages to publish websites as easily as pushing your local changes to the remote branch.

### Skills you'll gain
* Set up a GitHub Pages page 
* Deploy a website
* View and edit your website

### Notes on Prerequisites
We recommend that you complete [Learn Git: Introduction](https://www.codecademy.com/learn/learn-git-introduction) and [Learn GitHub: Introduction](https://www.codecademy.com/learn/learn-github-introduction) before completing this course.


Learn how to use GitHub Pages to easily set up and publish your own websites.

Deploying Websites using Git and GitHub

### About this course
Raspberry Pi is a powerful tool for integrating STEAM concepts into hands-on projects. In this course, you'll explore the Linux operating system, working with both the command-line and desktop environments. You'll also learn to interact with electronics, creating real-world applications and processing inputs and outputs in exciting projects.

### Skills you'll gain
* Navigate the Linux OS and command-line
* Use Raspberry Pi’s desktop environment
* Integrate electronics with Raspberry Pi
* Handle input and output in projects

Learn the basics of Raspberry Pi, the world-famous credit card sized computer, and the Linux operating system.

Learn Raspberry Pi

### About this course  
Designed for learners of all backgrounds, this course explores the fundamental principles of quantum computing, highlighting the unique capabilities that distinguish it from classical computing. Learners will delve into essential topics like qubits, superposition, entanglement, and real-world applications. 

### Skills you'll gain 
* Learn the foundational principles of quantum computing, including qubits, superposition, and entanglement  
* Differentiate between classical and quantum computing, identifying the strengths, limitations, and use cases for each model  
* Explore real-world scenarios where quantum computing excels and evaluate its practical impact across industries
* Visualize qubit states and understand their dynamic behavior in quantum systems 

Learn the fundamentals of quantum computing and how it differs from classical computing in this introductory course. 

Intro to Quantum Computing

### About this course
Continue your C++ learning journey with Learn C++: Functions. Learn about functions, a way to reuse the same blocks of code over and over throughout your program. Use your new functions knowledge to create multi-file programs that include header files.

### Skills you'll gain
* Write your own functions
* Implement those functions
* Understand scope

### Notes on Prerequisites
We recommend that you complete [Learn C++: Vectors](https://www.codecademy.com/learn/learn-c-plus-plus-vectors) before completing this course.

Take your C++ skills to the next level by learning how to use using C++ functions to write more flexible, modular, reusable code.


Learn C++: Functions

### About this course
Advance your Java programming skills with this course designed to take your expertise to the next level. Learn techniques, frameworks, and APIs that enable you to write efficient, scalable, and clean code. Explore advanced topics like parallel programming, servlets, and database integration for robust application development.

### Skills you'll gain
* Implement parallel and concurrent programming
* Build web applications using servlets
* Perform database operations with JDBC and SQL
* Communicate using sockets for client-server interactions
* Leverage Java Native Interface (JNI) to integrate other programming languages

Learn the basics of parallel and concurrent programming, servlets, and sockets in this advanced Java course.

Learn Advanced Java

### About this course
Learn to take your C programming skills to the next level by working with arrays and strings. These fundamental data structures allow you to store and manipulate data collections efficiently. This course covers creating, accessing, and modifying arrays, as well as using arrays to handle strings, which are essential for writing functional and optimized programs in C.

### Skills you'll gain
* Creating and managing arrays
* Accessing and modifying array elements
* Using array methods to add and remove data
* Storing and handling strings with arrays

Sharpen your programming skills by learning how to create, assess, and modify arrays and strings in C.

Learn C: Arrays and Strings

### Why Operating Systems: Processes?
Continue your Operating Systems learning journey! Processes and threads are key foundations of an operating system that all of the other code rests upon. Learn about what they are and how to manipulate them using process scheduling.


### Take-Away Skills
This course will cover content such as:
* The lifecycle of a process
* Threading and multithreading
* Different types of schedulers and scheduling algorithms

### Notes on Prerequisites
We recommend that you complete [Operating Systems: Introduction](https://www.codecademy.com/learn/operating-systems-introduction) before completing this course.


Learn more about operating system processes, threading and multithreading, and process scheduling.

Operating Systems: Processes

### Why Operating Systems: IO Systems?
Continue your Operating Systems learning journey! IO systems are a combination of hardware and software tools that help a user interact with a computer successfully. In this course, you'll learn about how the operating system interacts with IO hardware and software.

### Take-Away Skills
This course will cover content such as:
* The three general categories of IO devices
* Device drivers
* User-space and kernel-space
* Interrupt Handlers

### Notes on Prerequisites
We recommend that you complete [Operating Systems: Filesystems](https://www.codecademy.com/learn/operating-systems-filesystems) before completing this course.


Learn about IO Hardware and Software and how they interact with your Operating System.

Operating Systems: IO Systems

### About This Course

Choosing your first language can be difficult and stressful. This course aims to make it easier. By taking this course, you will be more confident in choosing a language to learn. After this course, you will be ready to learn to code in a language of your choice!

### Skills you'll gain

* Comparing and contrasting languages
* Choosing the language that's right for you

This course will introduce learners to factors to consider when picking a first language as well as describe some popular options.

Choosing a Programming Language

### About this course
Continue your GitHub learning journey with Learn GitHub: Best Practices. Learn how to interact with and fully utilize the powerful GitHub community of developers. 

### Skills you'll gain
* Write clear pull requests
* Make .gitignore files
* Use Git rebase 

### Notes on Prerequisites
We recommend that you complete [Learn GitHub: Introduction](https://www.codecademy.com/learn/learn-github-introduction) before completing this course.


Learn how to maintain clean code, write better pull requests, and collaborate with the GitHub community.

Learn GitHub: Best Practices

### Learn Emojicode
Happy 😀 World 🌎 Emoji 🌈 Day 🎉 
To celebrate this wonderful annual holiday, here is a mini-course on a Codecademy Team favorite... Emojicode! 
Emojicode is a real programming language with playful syntax like `😀 🔤Hello, world!🔤❗️` in place of traditional programming keywords. Learning it can bring some smiles and fun to your programming journey, as well be an enlightening experience in which you will never look at your go-to programming language the same way again.

### Note on Prerequisites: 
We wouldn't recommend you use this as your first course in programming; take an introductory course like [Learn C++](https://www.codecademy.com/learn/learn-c-plus-plus). Once you're comfortable with another language, Emojicode can be a fun diversion.

### Course Creators: 
- Sonny Li, Codecademy
- Kenny Lin, Codecademy
- Tim Liedtke, Codecademy
- Theo Weidmann, Creator of Emojicode

🍇 Learn about Emojicode, a programming language that consists of emojis! 🍉

Learn Emojicode

### Happy April Fool's Day! 

To celebrate, this is a mini-course on an esoteric programming language... LOLCODE! Inspired by the old lolcats internet memes, this is a real programming language with catchphrases like `"I CAN HAS"` and `"KTHXBYE"` in place of traditional programming keywords.

### Note on Prerequisites: 

We wouldn't recommend you use this as your first course in programming; take our [Welcome to Codecademy](https://youtu.be/dQw4w9WgXcQ) course and [one other language](https://www.codecademy.com/welcome/find-a-course) first. Once you're comfortable with another language, LOLCODE can be a fun diversion.

Learn about LOLCODE, an esoteric programming language based on internet memes and cats!

Learn LOLCODE

### About this course.

Are you feeling confused about where to aim for with your career goals? Not sure of the difference between frontend, backend, or data science pathways? This course aims to resolve those concerns!  At the end of the course, learners will have a clearer understanding of popular coding career options. 

### Skills you'll gain
* Considering factors when picking a career
* Comparing career paths such as web development, data science, and cybersecurity



Are you feeling confused about where to aim for with your career goals? Take this course to learn about different career options!

Choosing a Career in Tech

### About this course
Continue your C# learning journey with Learn C#: Arrays and Loops. Create, access, and manipulate arrays using some of C#'s built-in array methods. Traverse those arrays using various types of loops.

### Skills you'll gain
* Create and edit arrays
* Write `for` and `while` loops
* Loop through arrays

### Notes on Prerequisites
We recommend that you complete [Learn C#: Methods](https://www.codecademy.com/learn/learn-c-sharp-methods) before completing this course.


Learn how to organize data and automate repetitive tasks with arrays and loops.

Learn C#: Arrays and Loops

### About this course
Ready to start your journey into the C++ programming language? Take Learn C++: Introduction — start with a basic Hello World program, then learn about the various data types and how to control the flow of your program using logic and conditionals. 

### Skills you'll gain
* Create C++ programs
* Declare and edit variables
* Use conditionals in your code 


Dive into C++, a flexible and well-supported language that's still widely used now, over 40 years after its conception.

Learn C++: Introduction

### About this course
This course introduces you to the core concepts of  [Blockchain and Crypto](https://www.codecademy.com/resources/docs/general/cryptocurrency), providing a high-level overview of technologies like Dapps, Smart Contracts, NFTs, and DAOs. It’s designed for anyone curious about the potential of web3 or looking to explore how it could fit into their career path. By the end, you'll understand the fundamentals of Blockchain technology and its applications.

### Skills you'll gain
* Define Blockchain and Crypto concepts like Dapps, Smart Contracts, * NFTs, and DAOs
* Understand the use cases of web3 technology
* Assess if web3 aligns with your career and choose the right tech stack

Dive into the technology behind web3 and learn about the concepts behind Blockchain and Crypto!

Introduction to Blockchain and Crypto

### About this course 
Master advanced C++ concepts that professional developers use daily. This course teaches powerful features like preprocessor directives, operator overloading, and lambda expressions. You'll learn to write efficient, modern C++ code through hands-on projects, including building a cross-platform debugger and restaurant database system. By the end, you'll understand friend functions, stream operations, error handling, and constructor mechanics — essential skills for systems programming, game development, and high-performance applications. Perfect for developers ready to move beyond basic C++ and write production-ready code. ### Skills you'll gain
* Implement operator overloading * Master preprocessor directives * Build with lambda expressions * Handle streams and I/O operations

Learn advanced C++ programming with preprocessor directives, operator overloading, streams, and lambda expressions.

Learn Advanced C++

### About this course
Continue your Git learning journey with Learn GitHub: Introduction. GitHub is a popular hosting service that allows you to store your local Git repositories in the cloud. Gain access to the massive community of developers around the world who openly share their code, projects, and software development tools with each other.


### Skills you'll gain
* Create a GitHub account
* Use markdown to format text
* Commit using the command line

### Notes on Prerequisites
We recommend that you complete [Learn Git: Introduction](https://www.codecademy.com/learn/learn-git-introduction) before completing this course.


Learn how to use GitHub, a service that allows you to host and share your code.

Learn GitHub: Introduction

### About this course
Continue your Git learning journey with Learn Git: Branching and Collaboration. Learn more about creating and managing remote branches and how you can use them to work with others. 

### Skills you'll gain
* Create new branches
* Merge branches together
* Clone remote branches
* Fetch from remote branches

### Notes on Prerequisites
We recommend that you complete [Learn Git: Introduction](https://www.codecademy.com/learn/learn-git-introduction) before completing this course.


Learn how to create, merge, clone, and fetch Git branches to collaborate with other developers.

Learn Git: Branching and Collaboration

The command line is a quick and powerful text-based interface developers use to accomplish a wide set of tasks. With it, you’ll be able to customize your development experience and discover more of your computer’s capabilities. By learning the command line, you’ll also better prepare yourself for a career as an IT specialist, software engineer or systems analyst.

### Skills you'll gain
* Access and modify files
* Gain insight into the filesystem
* Customize your workflow 


Learn about the command line, starting with navigating and manipulating the file system, and ending with redirection and configuring the environment.

Learn the Command Line

### About this course
Git is used across the world to help developers track changes and collaborate on projects. GitHub, a web app integrated with Git, allows users to host, organize, explore, and collaborate on code with teams and the wider developer community. This course, now aligned with GitHub Foundations Certification and updated with guidance from GitHub internal experts, now offers enhanced hands-on experience with step-by-step guides for GitHub Desktop and Mobile Apps. Learn cutting-edge security practices like Private Access Tokens and 2FA, streamline workflows with GitHub Actions and Codespaces, and dive into GitHub Copilot, a generative AI that can help optimize your development process.

### Skills you'll gain
* Learn how Git and GitHub work
* Use common Git commands
* Collaborate using Git and GitHub
* Write code with GitHub Copilot

Use our beginner friendly Git course to integrate Git and GitHub and manage versions of your projects using Git branches. 

Learn Git & GitHub

### About this course 

This course is dedicated to programmers who are already familiar with the world of programming and are looking to become acquainted with the Rust programming language. We designed this course to be a series of short, interactive articles that you can skim, dive into, or even skip. We did this so that you can use this course to both learn Rust and to check as a reference guide. 

### Skills you'll gain

- Basic Rust syntax
- How to work with arrays in Rust
- Object-oriented programming in Rust
- Traits and generics in Rust


A quick primer on the fundamentals of the Rust programming language for experienced programmers.

Rust for Programmers

### About this course
Ready to start your journey into the C# programming language? Take Intro to C# — start with a basic Hello World program, then learn about the various data types and how to control the flow of your program using logic and conditionals. 

### Skills you'll gain
* Create C# programs
* Declare and edit variables

Dive into C#, a scalable programming language that is easy to read and maintain.


Intro to C#

Gain foundational knowledge in the video game development process. In this course, you will learn:
- Game Design: Take an idea to a full design ready for developers and asset creators
- Gameplay Development: Understand the inner workings of an engaging game, such as gameplay mechanics, artificial intelligence, and user experience
- Game Assets: Learn how immersive games are made using art and sound assets
- Tools: Learn about the tool of the trade, from programming languages to game engines

Explore video game development, including game design, gameplay development, and asset creation. 

Introduction to Game Development

### About this course
Continue your C++ learning journey with Learn C++: Classes and Objects. Create classes, which are user-defined types that serve as the blueprints for objects. Learn about object-oriented programming and why it's so important in C++.

### Skills you'll gain
* Write your own classes
* Make objects of those classes
* Manipulate your objects

### Notes on Prerequisites
We recommend that you complete [Learn C++: Functions](https://www.codecademy.com/learn/learn-c-plus-plus-functions) before completing this course.


Sharpen your C++ skills by learning how to use C++ classes and objects to build more scalable, modular programs.

Learn C++: Classes and Objects

### About this course
Dive into the C programming language, one of the most widely used languages. As a foundational language, C provides an in-depth understanding of how computers work and forms the basis for many modern programming languages. This course will guide you through the essentials of C, helping you establish a strong foundation for tackling more advanced topics in programming and software development.

### Skills you'll gain
* Write simple C programs with print statements and comments
* Understand basic C syntax
* Set up C on your computer

Learn about the basics of the C programming language, and write your first C program!

Learn C: Introduction

### About this course
Dive deeper into C programming by learning about pointers, a crucial concept for mastering the language. You'll also explore memory management, including allocation and access, which are essential for efficient program performance.

### Skills you'll gain
* Understand and use pointers in C
* Manipulate pointers with basic arithmetic
* Learn memory management fundamentals

Learn how to use C pointers and proper memory management to make your programs more efficient.

Learn C: Pointers and Memory

### Why Operating Systems: Process Synchronization and Memory Management?
Continue your Operating Systems learning journey! In this course, you will learn about synchronization, which ensures that threads in a multi-threaded program use shared resources safely. You will also learn about the operating system's role in controlling processes’ access to our computer’s memory.

### Take-Away Skills
This course will cover content such as:
* How to use synchronization to multi-thread programs safely
* What deadlocks are and how you can prevent them
* Segmentation, a memory management technique


### Notes on Prerequisites
We recommend that you complete [Operating Systems: Processes](https://www.codecademy.com/learn/operating-systems-processes) before completing this course.


Learn about Operating Systems and how to synchronize processes and handle memory management.

Operating Systems: Process Synchronization and Memory Management

### About this course
Dive deeper into C#, a powerful language with many applications, including web, game, and mobile development. In this course you'll build powerful, cross-platform applications using the versatile C# language and .NET framework and develop expertise in the language powering Unity, one of the world's leading game engines used by millions of developers. 

### Skills you'll gain: 
* Build applications using C# and .NET  
* Write using clear, readable syntax 
* Understand foundational ASP.NET skills 
* Leverage LINQ to simplify data querying 

Learn intermediate C# concepts like inheritance, asynchronous programming, events, iterators, and more to build efficient applications. 

Learn Intermediate C#

### About this course
Ready to start your journey into Git? Take Learn Git: Introduction — with Git, you can keep track of changes to your code using their industry-standard version control system. Switch between different versions of your code and branch off to create new features while preserving a main working copy.

### Skills you'll gain
* See the basic Git workflow
* Use Git commands
* Make your first commit
* Undo changes to your code


Learn how to track changes in your code and switch between different versions with Git, an open-source version control system.

Learn Git: Introduction

### About this course
Continue your C# learning journey with Learn C#: Classes, Objects, Interfaces, and Inheritance. Define your own custom types using classes and objects. Organize, secure, and simplify your code with interfaces and inheritance.

### Skills you'll gain
* Define new classes and methods
* Use `static` in your classes
* Build interfaces
* Override superclasses

### Notes on Prerequisites
We recommend that you complete [Learn C#: Arrays and Loops](https://www.codecademy.com/learn/learn-c-sharp-arrays-and-loops) before completing this course.


Explore C# subclasses, classes, superclasses, and more in this introduction to object-oriented programming with C#.

Learn C#: Classes, Objects, Interfaces, and Inheritance

### About this course
Continue your C++ learning journey with Learn C++: Vectors. Learn about vectors, a sequence of elements that you can access by an index, and manipulate them using some of C++'s built-in functions. 

### Skills you'll gain
* Create and manipulate vectors
* Use C++'s built-in functions
* Work with arrays

### Notes on Prerequisites
We recommend that you complete [Learn C++: Loops](https://www.codecademy.com/learn/learn-c-plus-plus-loops) before completing this course.


Learn how to use C++ vectors, a great way to keep your data organized.


Learn C++: Vectors

### About this course
Take your C programming skills further by learning about functions and structures. Functions allow you to reuse code efficiently, while structures enable you to group different data types together. These concepts are key for building modular, organized, and efficient programs.

### Skills you'll gain
* Define reusable functions
* Create structures to group data
* Understand variable scope and usage

Learn how to define scope, create reusable functions, and contain data types with structures in C.

Learn C: Functions and Structures

### About this course
Take your Java skills beyond the basics with Intermediate Java. This course helps you write cleaner, more efficient code while deepening your understanding of core Java concepts. You'll explore advanced topics like collections, threading, and testing frameworks, setting the foundation for creating robust and professional-grade Java applications.

### Skills you'll gain
* Handling input and output in Java
* Understanding Java collections and the Collections framework
* Implementing threading for complex programs
* Managing resources effectively with context managers
* Writing tests using Java’s JUnit library

Dive deeper into Java — one of the world’s most popular programming languages.



Learn Intermediate Java

### About this course
In today's digital world, protecting your personal data and privacy is more important than ever. This course introduces key concepts of personal digital security, including how to avoid common threats, recognize malware, and secure your devices. Learn essential practices to safeguard yourself from cyber threats and ensure your personal information stays protected.

### Skills you'll gain
* Detect and avoid social engineering attacks
* Identify different types of threat actors
* Recognize and secure your devices from malware

Hackers and cyber threats are a fact of today's modern, digital world. Everyone needs to be able to protect themselves from these threats.

Introduction to Personal Digital Security

### Why Operating Systems: Filesystems?
Continue your Operating Systems learning journey! Whether it is playing music, looking at photos, or watching a movie, computers are responsible for holding a lot of data. Learn about the filesystem, which is the data structure used by the operating system to store and retrieve that data. 

### Take-Away Skills
This course will cover content such as:
* Filesystem layers and operations
* Metadata
* Basic filesystem manipulation

### Notes on Prerequisites
We recommend that you complete [Operating Systems: Process Synchronization and Memory Management](https://www.codecademy.com/learn/operating-systems-process-synchronization-and-memory-management) before completing this course.


Learn how operating systems use filesystems to structure, store, and manage data.

Operating Systems: Filesystems

Computer science, often referred to as "CS," is a broad term that covers many sub-disciplines, including the worlds of software *and* hardware. It can be found in every piece of technology you use, from a smartphone or gaming console to a car or ATM. With so many applications for Computer Science, there's a space for everyone!

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