BeginnerDocumentationEnglish & French▲ 42 votes
MDN: Learn Web Development
Mozilla's structured curriculum covering HTML, CSS and JavaScript from zero, maintained by the people who document the web platform itself.
Browse resources
12 resources
BeginnerCourseEnglish▲ 40 votes
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Harvard's legendary intro to computer science: C, Python, SQL, algorithms and web development, free for everyone.
BeginnerCourseEnglish▲ 38 votes
The Odin Project
A full open-source curriculum for becoming a web developer: HTML, CSS, JavaScript, Node.js and Ruby paths with real projects throughout.
BeginnerDocumentationEnglish & French▲ 30 votes
The Official Python Tutorial
The canonical introduction to Python from the language's own documentation, available in a maintained French translation.
IntermediateDocumentationEnglish & French▲ 28 votes
React: The Official Tutorial
The official interactive introduction to React: components, state, effects and thinking in React, with editable examples.
IntermediateDocumentationEnglish▲ 22 votes
The TypeScript Handbook
The official guide to TypeScript's type system, from everyday types to generics and declaration files.
IntermediateCourseEnglish▲ 19 votes
web.dev Learn
Google's course collection on modern web development: CSS, accessibility, performance, forms and PWA, written by platform experts.
BeginnerDocumentationEnglish▲ 18 votes
Docker: Get Started
The official Docker introduction: images, containers, volumes and multi-container apps with Compose.
BeginnerCourseEnglish▲ 17 votes
Kaggle Learn
Short, hands-on micro-courses on Python, pandas, SQL and machine learning with in-browser notebooks.
IntermediateDocumentationEnglish▲ 16 votes
OWASP Cheat Sheet Series
Concise, actionable secure-coding guidance for dozens of topics, maintained by the OWASP community.
BeginnerCourseEnglish▲ 14 votes
Linux Journey
A gentle, well-sequenced free course on Linux: the shell, processes, permissions, networking and packages.
BeginnerCourseEnglish▲ 11 votes
Android Developer Courses
Google's official free training for Android: Kotlin, Compose and app architecture, from first app to advanced.