BeginnerCourseEnglish▲ 40 votes
Harvard CS50x: Introduction to Computer Science
Harvard's legendary intro to computer science: C, Python, SQL, algorithms and web development, free for everyone.
Browse resources
12 resources
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.
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.
BeginnerToolEnglish▲ 29 votes
Developer Roadmaps
Community-maintained visual roadmaps for frontend, backend, DevOps and 20+ other paths, with linked resources per step.
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.
IntermediateCourseEnglish▲ 19 votes
web.dev Learn
Google's course collection on modern web development: CSS, accessibility, performance, forms and PWA, written by platform experts.
BeginnerCourseEnglish▲ 17 votes
Kaggle Learn
Short, hands-on micro-courses on Python, pandas, SQL and machine learning with in-browser notebooks.
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.
BeginnerCourseEnglish▲ 14 votes
Linux Journey
A gentle, well-sequenced free course on Linux: the shell, processes, permissions, networking and packages.
IntermediateCourseFrench▲ 12 votes
OpenClassrooms: Administer a Linux System (French)
A complete French Linux administration course: users, permissions, services, monitoring. Free to read.
BeginnerCourseEnglish▲ 11 votes
Android Developer Courses
Google's official free training for Android: Kotlin, Compose and app architecture, from first app to advanced.