IntermediateBookEnglish & French▲ 33 votes
The Modern JavaScript Tutorial
From fundamentals to advanced topics like closures, prototypes and the event loop — the reference free JavaScript book, kept current.
Browse resources
15 resources
IntermediateDocumentationEnglish & French▲ 28 votes
React: The Official Tutorial
The official interactive introduction to React: components, state, effects and thinking in React, with editable examples.
IntermediateInteractiveEnglish▲ 27 votes
PortSwigger Web Security Academy
Free, hands-on labs covering the whole of web security — XSS, SQL injection, auth flaws — from the makers of Burp Suite.
IntermediateBookEnglish▲ 26 votes
The Rust Programming Language (The Book)
The official Rust book: ownership, borrowing, traits and fearless concurrency, free online with runnable examples.
IntermediateBookEnglish & French▲ 25 votes
Pro Git (2nd Edition)
The complete Git reference book, free online, with a maintained French translation — from first commit to plumbing internals.
IntermediateInteractiveEnglish▲ 24 votes
Exercism
Practice 70+ programming languages with small exercises and free human mentoring from volunteers.
AdvancedInteractiveEnglish & French▲ 23 votes
Root Me: Hacking & Security Challenges (French)
500+ security challenges with strong French-language coverage: web, crypto, forensics, networking. A francophone security-training reference.
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.
IntermediateDocumentationEnglish▲ 16 votes
OWASP Cheat Sheet Series
Concise, actionable secure-coding guidance for dozens of topics, maintained by the OWASP community.
IntermediateInteractiveFrench▲ 16 votes
France-IOI: Programming & Algorithmics (French)
Progressive French-language algorithmics and programming tracks with an automated judge. Also trains for programming olympiads.
AdvancedCourseEnglish▲ 15 votes
fast.ai: Practical Deep Learning for Coders
The famous top-down deep learning course: build working models first, understand the theory as you go.
AdvancedArticleEnglish▲ 13 votes
Teach Yourself Computer Science
An opinionated map of the nine CS subjects that matter and the single best free resource for each.
IntermediateCourseFrench▲ 12 votes
OpenClassrooms: Administer a Linux System (French)
A complete French Linux administration course: users, permissions, services, monitoring. Free to read.
IntermediateInteractiveEnglish▲ 9 votes
SwiftUI Tutorials
Apple's official interactive SwiftUI tutorials: build real iOS interfaces step by step in Xcode.