AI-class, ML-class, DB-class by Stanford

A detailed comparison of 3 online classes by Stanford professors:

Fortnightly Mailing: Apples, screwdrivers and desks: a comparative review of three Stanford free online computer science courses

ai-class.com

DSmartWeb.com/ai-class
AI-class notes

ml-class.org

Machine Learning - complete course notes

db-class.org