A study tracker for CS50x 2026. Set your pace, get gentle reminders if you ask for them, and track your progress from the first lecture to your final project. Take the planning out of it, and keep showing up.
An unofficial companion. CS50 is Harvard University's course, taught by David J. Malan. Every lecture and problem links to Harvard's own pages, and you take the course and submit your work there, free, at cs50.harvard.edu/x. Not affiliated with or endorsed by Harvard.
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CS50's lectures, notes and problem sets belong to Harvard University and are shared under CC BY-NC-SA 4.0. This tracker links to them and doesn't copy them. It never shows solutions, and CS50 grades your work only through its own submission tools and gradebook. The schedule, self-check questions and week guides are Cocoon's own. Lecture chapters come from Harvard's YouTube descriptions. Read the full CS50 study guide →