Cheatsheets

Learn JavaScript

Learn HTML

Learn Python 3

Learn Java

Learn SQL

Learn C++

Learn CSS

Learn C#

Learn React

Code Foundations - Learn How to Code

Learn C

Learn PHP

Learn R

Full-Stack Engineer - Fundamentals of HTML

Learn Ruby

Computer Science - CS101: Introduction to Programming

Learn Intermediate JavaScript

Learn the Command Line

Learn Swift

Full-Stack Engineer - Fundamentals of CSS

Learn TypeScript

Data Scientist: Analytics Specialist - Principles of Data Literacy

Front-End Engineer - Fundamentals of HTML

Learn Go

Learn Git & GitHub

Introduction to Cybersecurity

Full-Stack Engineer - Improved Styling with CSS

Front-End Engineer - Fundamentals of CSS

Learn Intermediate CSS

Learn Intermediate Python 3

Analyze Data with SQL - Getting Started with SQL

Build a Website with HTML, CSS, and Github Pages - Beginner HTML

Full-Stack Engineer - Making a Website Responsive

Full-Stack Engineer - Deploying Websites

Data Scientist: Machine Learning Specialist - Learn SQL

Front-End Engineer - Improved Styling with CSS

Learn Node.js

Data Science Foundations - Python Fundamentals for Data Science (Part I)

Python for Programmers

Full-Stack Engineer - JavaScript Syntax, Part I

Python Fundamentals

Learn Kotlin

Full-Stack Engineer - JavaScript Syntax, Part II

Learn Bash Scripting

Front-End Engineer - Deploying Websites

Front-End Engineer - Making a Website Responsive

Introduction to IT

Building Interactive JavaScript Websites

Learn React Native

Front-End Engineer - JavaScript Syntax, Part I

Analyze Data with Python - Introduction to Python

Front-End Engineer - JavaScript Syntax, Part II

Data Scientist: Analytics Specialist - Python Fundamentals for Data Science (Part II)

Create Video Games with Phaser.js - Learn JavaScript Basics

Analyze Business Data with SQL - Writing Basic Queries

Full-Stack Engineer - Building Interactive Websites

Introduction to UI and UX Design

Build a Website with HTML, CSS, and Github Pages - Beginner CSS

iOS Developer - iOS and Swift Foundations

Visualize Data with Python - Introduction to Python

Analyze Data with SQL - Calculating Aggregates

Analyze Data with SQL - Joining Multiple Tables

Learn jQuery

Computer Science - CS102: Data Structures and Algorithms

Full-Stack Engineer - Git and GitHub, Part I

Create a Front-End App with React - Introduction to JavaScript and Building Apps

Learn Web Scraping with Beautiful Soup

Getting Started Off-Platform for Data Science

Front-End Engineer - Building Interactive Websites

Build Chatbots with Python - Introduction to Python and Chatbots

Build Websites for your Business - How to Build Websites on Your Own Computer

Learn Data Analysis for your Business - Python Fundamentals

Full-Stack Engineer - JavaScript Syntax, Part III

Full-Stack Engineer - Async JavaScript and HTTP Requests

Learn the Basics of Regular Expressions

Build Websites for your Business - Responsive Design and Accessibility

Analyze Financial Data with Python - Introduction to Python

Learn Data Analysis for your Business - Getting Started with Data Analytics

Introduction to DevOps

Learn Redux

Introduction to Linux

Learn Data Analysis with Pandas

Back-End Engineer - Web Development Fundamentals

Full-Stack Engineer - JavaScript Testing

iOS Developer - Wireframing and Creating a Project in Xcode

Analyze Data with Python - NumPy: A Python Library for Statistics

Build Websites for your Business - Intermediate CSS: Colors and Typography

Learn HTML

Learn Asynchronous JavaScript

Probability

Data Scientist: Analytics Specialist - Python Pandas for Data Science

Java for Programmers

Front-End Engineer - JavaScript Syntax, Part III

Build a Machine Learning Model with Python - Supervised Learning: Regression

Build a Website with HTML, CSS, and Github Pages - Intermediate CSS: Layout and Positioning

Learn Data Structures and Algorithms with Python

Front-End Engineer - Git and GitHub, Part I

Build Basic Android Apps with Java - Android and Java Foundations

Analyze Data with Python - Data Manipulation with Pandas

Build Python Web Apps with Django - Introduction to Django

Build a Website with HTML, CSS, and Github Pages - Advanced CSS: Flexbox and CSS Transitions

Back-End Engineer - JavaScript Syntax, Part I

Data Science Foundations - Exploratory Data Analysis in Python

Java: Introductions and Variables

Learn the Basics of Machine Learning

Front-End Engineer - Async JavaScript and HTTP Requests

Java: Object-Oriented Programming

Learn Spring

Learn React Testing

Full-Stack Engineer - Introduction to Back-End

Pass the Technical Interview with Python - Welcome to Interview Prep in Python

Learn the Basics of Artificial Intelligence (AI) with Minimax

Design Databases With PostgreSQL - What Is A Database?

iOS Developer - Building Code History: The User Interface

Front-End Engineer - JavaScript Testing

Build Python Web Apps with Flask - Introduction to Python

Build Web Apps with ASP.NET - Beginner C#

Create REST APIs with Spring and Java - Java I

C++ for Programmers

Build a Website with HTML, CSS, and Github Pages - Finishing Touches and Publishing a Website

Learn Advanced Python 3

Back-End Engineer - JavaScript Syntax, Part II

Learn Raspberry Pi

Full-Stack Engineer - Build a Back-end with Express.js

Visualize Data with Python - Graphing in Python

Data Scientist: Analytics Specialist - Statistics Fundamentals for Data Science

Learn Data Analysis for your Business - Data Manipulation with Pandas

Fundamentals of Cybersecurity - Why Cybersecurity?

Create Video Games with Phaser.js - Learn JavaScript: Function and Scope

Pass the Technical Interview with Python - Linear Data Structures

Fundamental Math for Data Science - Probability

Build Python Web Apps with Flask - Introduction to Flask

Learn p5.js

Learn ASP.NET

Data Acquisition

Fundamentals of Cybersecurity - Cyber Attacks

Create a Front-End App with React - Introduction to React

Create a Front-End App with React - JavaScript Iterators, Objects, and Classes

Analyze Data with SQL - Interview Prep

Create a Front-End App with React - JavaScript Functions, Arrays, and Loops

Build Chatbots with Python - Python Data Structures and Loops

Learn Responsive Design

Computer Architecture

Linear Regression in Python

Learn Go: Loops, Arrays, Maps, and Structs

Build Chatbots with Python - Rule-Based Chatbots

Analyze Data with Python - Data Visualization with Matplotlib

Visualize Data with Python - Python for Data Analysis

Back-End Engineer - Basics of Back-End Development

Pass the Technical Interview with JavaScript - Getting Started with Data Structures

Machine Learning Fundamentals - Feature Engineering I: Data Transformations

Learn Intermediate Swift

Getting Started with Natural Language Processing

Analyze Data with R - What Is R?

Learn A-Frame (VR)

Learn JavaScript Unit Testing

Design Databases With PostgreSQL - What Can I Do With A Database?

Analyze Data with Python - Statistics for Data Analysis

Java: Algorithms

Create a Back-End App with JavaScript - JavaScript Fundamentals

Back-End Engineer - Building Interactive Websites with JavaScript

Build Python Web Apps with Django - Templates in Django

iOS Developer - Building Code History: The Question Model

Full-Stack Engineer - Git and GitHub, Part II

Create REST APIs with Spring and Java - Web and Spring Basics

Analyze Data with Python - Hypothesis Testing with SciPy

Design Databases With PostgreSQL - How Do I Make And Populate My Own Database?

Java: Loops and Arrays

Learn Flask

Learn Full-stack Engineering for your Business - JavaScript Syntax, Part I

Computer Science - CS103: Databases

How to Clean Data with Python

Pass the Technical Interview with Java - Getting Started With Data Structures

Pass the Technical Interview with JavaScript - JavaScript Linear Data Structures

Analyze Financial Data with Python - Introduction to Pandas

Create a Front-End App with React - Modern JavaScript: Modules and Browser Compatibility

Pass the Technical Interview with Java - Linear Data Structures

Build Deep Learning Models with TensorFlow - Foundations of Deep Learning and Perceptrons

iOS Developer - Building Code History: The Game Model

Full-Stack Engineer - Database Basics

Linear Algebra

Differential Calculus

Build Basic Android Apps with Java - Wireframing, Java Variables, and Android Studio

Analyze Data with R - Introduction To Programming In R

Full-Stack Engineer - Working with Databases

Build a Machine Learning Model with Python - Supervised Learning: Introduction to Classification

Create a Professional Website with Velo by Wix

Analyze Financial Data with Python - Introduction to NumPy

Visualize Data with Python - Data Manipulation in Python

Learn Node-SQLite

Create an Advanced Web App with React and Redux - React

Back-End Engineer - JavaScript Syntax, Part III

Build Python Web Apps with Flask - Introduction to Python Data Structures and Loops

Create a Back-End App with JavaScript - JavaScript Conditionals and Functions

Build Python Web Apps with Django - Data in Django

Build Web Apps with ASP.NET - ASP.NET I

Learn Data Visualization with Python

Build Deep Learning Models with TensorFlow - Getting Started with TensorFlow

Technical Interview Practice with Python

Full-Stack Engineer - Designing Relational Databases

Software Design Principles

Create Video Games with Phaser.js - Learn JavaScript: Arrays and Loops

Summary Statistics

Front-End Engineer - Linear Data Structures

Data Scientist: Natural Language Processing Specialist - Supervised Learning I : Regressors, Classifiers and Trees

Build Web Apps with ASP.NET - Intermediate C#

Data Science Foundations - Data Wrangling, Cleaning, and Tidying

Data Scientist: Analytics Specialist - Data Visualization Fundamentals with Python

Create a Front-End App with React - React: Components Interacting

Learn Data Analysis for your Business - Data Acquisition

Learn the Basics of Android

Create REST APIs with Spring and Java - Responding to Requests

Create REST APIs with Spring and Java - Java II

Full-Stack Engineer - Advanced PostgreSQL

Learn Advanced React

Back-End Engineer - Build a Back-End with Express.js

Build Python Web Apps with Django - Views in Django

Visualize Data with Python - Advanced Graphing in Python

Full-Stack Engineer - Connecting Front-End to Back-End

Back-End Engineer - Git and Github, Part I

Computer Science - CS104: Computer Architecture

Master Statistics with Python - Variable Types

Analyze Financial Data with Python - Visualizing Finance Data

Front-End Engineer - Git and GitHub, Part II

Create Video Games with Phaser.js - Learn JavaScript: Higher Order Functions and Iterators

Learn Statistics with NumPy

Data Scientist: Natural Language Processing Specialist - Getting Started with Natural Language Processing

Create a Front-End App with React - React: Component State

Back-End Engineer - Async JavaScript and HTTP Requests

Study for the AP Computer Science A Exam (Java) - Writing Your First Java Program

Learn Navigation Design

Learn Statistics with Python

Create a Back-End App with JavaScript - Building Back-End Servers with Express.js

Create a Front-End App with React - AJAX Requests and API Interactions

Learn Data Analysis for your Business - Hypothesis Testing

Full-Stack Engineer - Linear Data Structures

iOS Developer - Building Code History: The Final App

Full-Stack Engineer - API Development with Swagger and OpenAPI

Build a Machine Learning Model with Python - Supervised Learning: Advanced Classification

R for Programmers

Create a Back-End App with JavaScript - JavaScript Objects, Modules, and Browser Compatibility

Connecting Front-End to Back-End

Create a Back-End App with JavaScript - JavaScript Arrays, Loops, and Iterators

Data Wrangling and Tidying

Data Scientist: Machine Learning Specialist - Machine Learning Fundamentals

Java: Inheritance and Polymorphism

Getting More Advanced with Design

Build Basic Android Apps with Java - Programming Logic with Java

Front-End Engineer - Algorithms

Data Scientist: Machine Learning Specialist - Math for Machine Learning

Data Scientist: Machine Learning Specialist - Supervised Learning I : Regressors, Classifiers and Trees

Design Databases With PostgreSQL - How Do I Make Sure My Database Stays Intact?

Learn Recursion with Python

Foundations of Machine Learning: Supervised Learning

Design Databases With PostgreSQL - How Do I Make Sure My Database Stays Fast?

Fundamentals of Operating Systems

Build Python Web Apps with Django - Forms in Django

Build Python Web Apps with Flask - Introduction to SQL and Databases for Back-End Web Apps

Front-End Engineer - Complex Data Structures

User Authentication & Authorization in Express

iOS Developer - Building Cookcademy: Exploring Recipes

Full-Stack Engineer - DevOps Fundamentals

Full-Stack Engineer - Algorithms

Build Python Web Apps with Django - Accounts and Authentication in Django

Learn Statistics with R

Create REST APIs with Spring and Java - Data with JPA

How to Debug JavaScript Errors

Fundamentals of Cybersecurity - Cybersecurity Assessment and Research

Analyze Data with R - Statistics In R

Create Video Games with Phaser.js - Learn JavaScript: Objects

Data Visualization

Learn Full-stack Engineering for your Business - JavaScript Syntax, Part II

Analyze Financial Data with Python - Regression

Natural Language Processing

Front-End Engineer - Interview Skills

Front-End Engineer - Search and Graph Search Algorithms

Exploratory Data Analysis in Python

Full-Stack Engineer - Complex Data Structures

Build Chatbots with Python - Retrieval-Based Chatbots

Full-Stack Engineer - Interview Skills

Styling a Website

Create an Advanced Web App with React and Redux - Introduction to React and Redux

Linear Data Structures

Pass the Technical Interview with Python - Hash Maps

Back-End Engineer - Designing Relational Databases

Back-End Engineer - Working with Databases

Back-End Engineer - Database Basics

Java: Going Further with Classes and Methods

Data Scientist: Machine Learning Specialist - Python Fundamentals Part III

Full-Stack Engineer - Search & Graph Search Algorithms

Pass the Technical Interview with Python - Algorithmic Concepts

Study for the AP Computer Science A Exam (Java) - Arrays and Loops

Build Deep Learning Models with TensorFlow - Classification

Analyze Data with R - Data Visualization In R

Learn Build Tools

Technical Interview Practice with JavaScript

Learn Emojicode

Pass the Technical Interview with Python - Nonlinear Data Structures

Build Basic Android Apps with Java - Java Arrays and Loops

Analyze Data with R - Working With Data In R

iOS Developer - Learn Git & Github for iOS Development

Learn dplyr

Pass the Technical Interview with JavaScript - Algorithmic Concepts

Study for the AP Computer Science A Exam (Java) - Object-Oriented Programming

iOS Developer - Learn the Command Line for iOS Development

Pass the Technical Interview with JavaScript - Hash Maps

Cybersecurity for Business

Pass the Technical Interview with Java - Hash Maps

Principles of Data Literacy

Pass the Technical Interview with Java - Nonlinear Data Structures

Build Chatbots with Python - Deep Learning and Generative Chatbots

Create REST APIs with Spring and Java - Spring Context

Create an Advanced Web App with React and Redux - Redux

Learn Linear Regression in R

Data Scientist: Natural Language Processing Specialist - Language Quantification

Create a Back-End App with JavaScript - SQL for Back-End Development

Apply Natural Language Processing with Python - Text Preprocessing

Pass the Technical Interview with JavaScript - Nonlinear Data Structures

API Development with Swagger and OpenAPI

Build a Machine Learning Model with Python - Unsupervised Learning

Learn Data Analysis for your Business - Summary Statistics

Create Video Games with Phaser.js - Learn JavaScript Classes and Phaser Animations

Back-End Engineer - Git and Github, Part II

Pass the Technical Interview with Python - Sorting Algorithms

Fundamental Math for Data Science - Descriptive Statistics

Learn React Router

Learn Complex Data Structures

iOS Developer - Building Cookcademy: Adding New Recipes

Pass the Technical Interview with Java - Algorithmic Concepts

Pass the Technical Interview with Python - Graphs and Graph Traversals

Analyze Data with R - Introduction To Machine Learning In R

Learn Sorting Algorithms with Python

Learn ggplot2

Java: Conditionals and Control Flow

Feature Engineering - Transforming Data into Features

Data Scientist: Machine Learning Specialist - Statistics Fundamentals Part II

Learn Handlebars

Learn CSS-in-JS

Create a Back-End App with JavaScript - Connecting JavaScript and SQL

Back-End Engineer - Advanced PostgreSQL

Build Basic Android Apps with Java - Android App Development

Master Statistics with Python - Summary Statistics for Quantitative Data

Learn Full-stack Engineering for your Business - Git and Github, Part I

Study for the AP Computer Science A Exam (Java) - A Deeper Dive Into Classes

Fundamental Math for Data Science - Inferential Statistics

Text Preprocessing

Data Scientist: Machine Learning Specialist - Unsupervised Learning Algorithms

Learn Data Analysis for your Business - Data Wrangling and Tidying

Data Scientist: Natural Language Processing Specialist - Unsupervised Learning Algorithms I

Pass the Technical Interview with JavaScript - Sorting Algorithms

Build a Machine Learning Model with Python - Perceptrons and Neural Nets

Pass the Technical Interview with Java - Sorting Algorithms

Handling Missing Data

Study for the AP Computer Science A Exam (Java) - Conditionals and Control Flow

Pass the Technical Interview with Python - Interview Prep and Practice Problems

Defending Node Applications from SQL Injection, XSS, & CSRF Attacks

Fundamental Math for Data Science - Linear Algebra

SQL for Interview Prep

Study for the AP Computer Science A Exam (Java) - Algorithms

Hypothesis Testing with Python

Pass the Technical Interview with Java - Graph Data Structures

Learn Data Analysis for your Business - Data Visualization

Learn Website UI Design

Create an Advanced Web App with React and Redux - Deployment

Data Scientist: Natural Language Processing Specialist - Supervised Learning II: SVM's, Random Forests, Naive Bayes

Learn Full-stack Engineering for your Business - SQL for Back-End Development

Learn Full-stack Engineering for your Business - JavaScript Syntax, Part III

[Beta] Learn Microsoft Excel for Data Analysis

Back-End Engineer - Search and Graph Search Algorithms

Learn Full-stack Engineering for your Business - Build a Back-End with Node/Express.js

Back-End Engineer - API Development with Swagger and OpenAPI

iOS Developer - Non-Linear Data Structures

Data Analyst Interview Preparation - Coding Challenges

Data Scientist: Inference Specialist - Math for Inference Data Science

JavaScript Syntax, Part III

Learn Full-stack Engineering for your Business - Linear Data Structures

Build Basic Android Apps with Java - Intermediate Java and Capstone Project

Back-End Engineer - Algorithms

Learn the Basics of Causal Inference with R

Data Scientist: Inference Specialist - Regression for Inference Data Science

Responsive Design

Cybersecurity Analyst Interview Prep - Knowledge Review for Cybersecurity Analysts: Communication, Definitions, & Networking

Master Statistics with Python - Linear Regression

Learn Full-stack Engineering for your Business - Test Driven Development with JavaScript

Master Statistics with Python - Hypothesis Testing

Master Statistics with Python - Visualizing Categorical Data

Pass the Technical Interview with Java - Java Interview Prep and Algorithms Practice

Language Parsing

Securing Express Applications - User Authentication & Authorization

Fundamental Math for Data Science - Differential Calculus

iOS Developer - Linear Data Structures

Data Scientist: Natural Language Processing Specialist - Deep Learning and Neural Networks

iOS Developer - Sorting Algorithms

Livestreams

Back-End Engineer - DevOps Fundamentals

Redux

Learn Full-stack Engineering for your Business - React, Part I

Data Scientist: Machine Learning Specialist - Supervised Learning II: SVM's, Random Forests, Naive Bayes

Study for the AP Computer Science A Exam (Java) - Inheritance and Polymorphism

Study for the AP Computer Science A Exam (Java) - Code Challenges

Introduction to Algorithms and Linear Data Structures in Swift

Deploying with Netlify and Heroku

Learn React.js: Part II

Learn Full-stack Engineering for your Business - Security, Authentication, and Authorization

iOS Developer - Building Cookcademy: Editing and Favoriting Recipes

Learn Full-stack Engineering for your Business - Improved Styling with CSS

Intermediate CSS: CSS Grid

Securing Express Applications - Data Security

Data Scientist Interview Preparation - Coding Challenges for Data Scientist Interview Preparation

Python for Data Analytics

Securing Express Applications - Defending Node Applications from SQL Injection, XSS, & CSRF Attacks

Foundations of Machine Learning: Unsupervised Learning

Data Scientist: Inference Specialist - R for Programmers

How to Implement Search Algorithms with Python

Back-End Engineer - Software Design Principles

Learn Full-stack Engineering for your Business - Interview Skills

Learn Full-stack Engineering for your Business - Git and GitHub, Part II

Learn Full-stack Engineering for your Business - Search & Graph Search Algorithms

CS101 Livestream Series

Summarize a Single Feature

iOS Developer - Whiteboarding and Practice Problems

JavaScript Fundamentals

React, Part I

Text Generation

Master Statistics with Python - Visualizing a Distribution of Quantitative Data

Learn Full-stack Engineering for your Business - Setting Up Your Dev Environment

Data Scientist Interview Preparation - Machine Learning and Algorithms for Data Science Interviews

Data Scientist: Natural Language Processing Specialist - Text Generation

Build Web Apps with ASP.NET - ASP.NET II

Introduction to Non-linear Data Structures in Swift

Learn Full-stack Engineering for your Business - Algorithms

Data Scientist: Inference Specialist - Advanced Exploratory Data Analysis

Securing Express Applications - Introduction to Securing Express Applications

Learn Full-stack Engineering for your Business - Redux

Learn Full-stack Engineering for your Business - React, Part II

Learn Full-stack Engineering for your Business - Complex Data Structures

Data Scientist: Natural Language Processing Specialist - Text Preprocessing

Technical Interview Practice with Java

Data Scientist: Natural Language Processing Specialist - Build Chatbots

Learn Full-stack Engineering for your Business - Building Interactive Websites with JavaScript

Machine Learning: Unsupervised Learning

Learn Full-stack Engineering for your Business - Designing Relational Databases

Learn Hardware Programming with CircuitPython

iOS Developer - Algorithmic Concepts

Master Statistics with Python - Associations between Variables

Back-End Engineer - Complex Data Structures

Back-End Engineer - Linear Data Structures

Data Scientist: Machine Learning Specialist - Deep Learning and Neural Networks

Learn Full-stack Engineering for your Business - Async JavaScript and HTTP Requests

Machine Learning: Supervised Learning 🤖

Learn Full-stack Engineering for your Business - Advanced PostgreSQL

Data Scientist: Analytics Specialist - Advanced Exploratory Data Analysis

Pass the Technical Interview with JavaScript - JavaScript Interview Prep and Algorithm Practice

Master Statistics with Python - Probability

Learn Full-stack Engineering for your Business - Web Development Fundamentals

Data Scientist: Inference Specialist - Causal Inference Fundamentals

Back-End Engineer - Interview Skills

HTML: Tables and Forms

Learn Full-stack Engineering for your Business - Making a Website Responsive

Back-End Engineer - JavaScript Testing

Learn Data Analysis for your Business - SQL for Interview Prep

Master Statistics with Python - Summary Statistics for Categorical Data

Foundations of Deep Learning