Computer Science

Algorithms, data structures, systems, and CS fundamentals.

3 resources

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

IntermediateInteractiveFrench▲ 16 votes

Progressive French-language algorithmics and programming tracks with an automated judge. Also trains for programming olympiads.

AdvancedArticleEnglish▲ 13 votes

An opinionated map of the nine CS subjects that matter and the single best free resource for each.