Alcamy - Free, open self-learning platform. Learn & teach anything.
CS183B - Startup Class - Stanford class taught by Sam Altman & guest speakers
EduDo - EduDo is a video discussion platform
Classroomies - Watch Stanford CS & Startup lectures together
Sutle - Save and organize resources into a directed learning path.
Apply to YC (Y Combinator) - Curated collection of resources for founders applying to YC.