depends what you re looking for:
Ebooks - Bib (without a doubt) and MyA (They cannot be neglected)
Elearning Videos - Bitspyder, Bitme they are full of Lynda stuff lol, also CGPeers is best for the Video Tutorials.
AudioBooks - Ahter demonoid, i started using MyAnonamouse
Studied these from past 7-8 months. Believe me. AS the above user said, Bitme is more and more over-rated.