CS183B - Startup Class - Stanford class taught by Sam Altman & guest speakers
Y Combinator Companies - Interactive list of all 1000+ YC companies
Classroomies - Watch Stanford CS & Startup lectures together
Apply to YC (Y Combinator) - Curated collection of resources for founders applying to YC.
Startup School - How to start a startup, by Y Combinator
Woz U - Steve Wozniak's new tech education platform