Contact
Help us keep resources accurate: report broken links, wrong attempt labels, or suggest additions.
Report a problem
If a lecture, book, or exam document is mislabelled (wrong course, level, subject, chapter, or attempt), points to a broken link, or links to the wrong source, please let us know. Include the page URL you were on and the name of the resource.
The recommended channel is a GitHub issue on the project repository:
Suggest a resource
Have a free public lecture series, a book, or a paper that fits the platform? Open an issue following the same link. Include the course, level, and subject the resource belongs to, plus the source URL.
Response time
We triage reports as we are able. Emergency formatting is not guaranteed — please verify any download or source link before relying on it for an exam submission.