edX

edx.org

MIT, Harvard और 160+ स्कूलों के university courses, कई मुफ्त में audit किए जा सकते हैं। course syllabus और lecture transcripts structured learning notebook की नींव बन सकते हैं।

Course syllabi and lecture transcripts from edX give a notebook actual structure, sequencing a topic the way a university course would rather than pulling from scattered blog posts. That makes it a good source for building a self-study notebook meant to walk through a subject in order. What's available for free audit varies by course, and some materials are trimmed compared to the paid track.