This is Fall 2020 of CS50 at Harvard College. Looking for Spring 2021?

This was CS50

Harvard College
Fall 2020

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
Week 10 Ethics

Security
Artificial Intelligence

Ed

Announcements
FAQs
Final Project
Orientation
Review Session
Sections
Staff
Syllabus
Test
Tutorials

CS50 IDE
CSS Tutorial
Flask Quickstart
HTML Tutorial
Jinja Template Designer Documentation
Manual Pages
Python Documentation
Scratch
SQL Tutorial
Status Page
Style Guide

With thanks to CS50’s alumni and friends

Orientation

Slides
Video
- CS50 Video Player
- YouTube