A month ago there was ai-class.org. Then a few days ago, db-class.org and ml-class.org went live, too. This is good news for newbies like me.
I enrolled in all three classes (AI, DB, and ML) but only tried out DB class. They have some recorded videos for the first week even though the class has not started yet. My gripe is that my Internet connection is not fast enough for their videos. Their videos are more than 800-pixel wide. That is probably twice the required resolution for such presentations. The pluses are the content is really good. Excellent lectures, excellent questions and quiz, just excellent.
So, if you are interested in introductory materials to either Artificial Intelligence, or Database, or Machine Learning, you've gotta enroll in these free online classes by Stanford.