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8 resources

BeginnerDocumentationEnglish & French▲ 42 votes

Mozilla's structured curriculum covering HTML, CSS and JavaScript from zero, maintained by the people who document the web platform itself.

BeginnerCourseEnglish▲ 40 votes

Harvard's legendary intro to computer science: C, Python, SQL, algorithms and web development, free for everyone.

Computer Science Algorithms PythonFree with limits: Optional paid certificate; all content free

BeginnerCourseEnglish▲ 38 votes

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 canonical introduction to Python from the language's own documentation, available in a maintained French translation.

BeginnerDocumentationEnglish▲ 18 votes

The official Docker introduction: images, containers, volumes and multi-container apps with Compose.

BeginnerCourseEnglish▲ 17 votes

Short, hands-on micro-courses on Python, pandas, SQL and machine learning with in-browser notebooks.

Data & Data Science Python Machine Learning SQLFree with limits: Requires a free Kaggle account

BeginnerCourseEnglish▲ 14 votes

A gentle, well-sequenced free course on Linux: the shell, processes, permissions, networking and packages.

BeginnerCourseEnglish▲ 11 votes

Google's official free training for Android: Kotlin, Compose and app architecture, from first app to advanced.