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Data Structures & Algorithms NEW!

Learn fundamental concepts for organizing, storing, and processing data in Python to ace technical interviews, LeetCode problems, or a college DSA class! <br /> Prerequisite: <a href="/python"><strong>Python</strong></a>

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Node.js NEW!

Combine JavaScript with the power of Node.js—unleash your full-stack potential with server-side programming & dynamic web applications! <br /> Prerequisite: <a href="/javascript"><strong>JavaScript</strong></a> and <a href="/command-line"><strong>Command Line</strong></a>

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Java NEW!

Master Java by exploring object-oriented programming and essential data structures, building skills to create efficient and scalable applications!

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C++ NEW!

Learn C++ and master object-oriented programming and data structures!

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Python

Learn programming fundamentals such as variables, control flow, and loops with the world's most popular and versatile coding language — Python!

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HTML

Create your first website with HTML, the building blocks of the web and dive into the world of web development.

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CSS

Learn to use CSS selectors and properties to stylize your HTML pages with colors, fonts, sizing, layouts, and more!

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JavaScript

Learn variables, loops, functions, and events to start building interactive web apps with the programming language of the web – JavaScript!

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Command Line

Learn to navigate and manipulate your computer filesystem with the command line! Master the command line with Codédex -- for free!

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Git & GitHub

Learn to use Git for version control, and GitHub to collaborate on projects, track code changes, and contribute to open-source projects. <br /> Prerequisite: <a href="/command-line"><strong>Command Line</strong></a>

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React

Get introduced to React, an open-source JavaScript-based web development library originally created at Facebook. Learn to code React with Codédex -- for free!

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Intermediate Python

Begin learning intermediate Python with data structures.

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NumPy

Learn the fundamentals of data manipulation using NumPy! Learn to code using NumPy with Codédex -- for free!

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SQL

Learn database basics, queries, calculations, and more to start managing and analyzing data like a pro.

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Intermediate JavaScript

Unleash the power of JavaScript with asynchronous programming.

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Gen AI

Dive into the fundamentals of Generative AI and machine learning.

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p5.js

P5.js is a JavaScript library that makes coding accessible for artists, designers, and beginners.