This is Fall 2023 of CS50 at Harvard College. Looking for CS50x on edX? Or CS50’s own OpenCourseWare?

This was CS50

Harvard College
Fall 2023

CS50.ai
Ed Discussion
Visual Studio Code

Week 0 Scratch
Week 1 C
Week 2 Arrays
Week 3 Algorithms
Week 4 Memory
Week 5 Data Structures
Week 6 Python
Week 7 SQL
Week 8 HTML, CSS, JavaScript
Week 9 Flask

Artificial Intelligence
Cybersecurity

Announcements
FAQs
Feedback
Final Project
Office Hours
Orientation
Problem Sets
Sections
Seminars
Staff
Study Buddies
Supersection
Syllabus

CS50 Manual Pages
CS50 Status Page

Orientation

Slides
- Google Slides
Video
- CS50 Video Player
- YouTube