> His biology stuff, for instance, is decidedly worse than the mathematics. I dunno. I've been studying cell biology on my spare time. I've been using The Mol

> His biology stuff, for instance, is decidedly worse than the mathematics. I dunno. I've been studying cell biology on my spare time. I've been using The Molecular Biology of the Cell (http://www.amazon.com/Molecular-Biology-Cell-Bruce-Alberts/dp/0815316194/ http://www.amazon.com/Molecular-Biology-Cell-Bruce-Alberts/d...) that in my opinion is a great book, and as far as I know, is well-respected in general. Still, watching Sal's biology videos has been of great help. Although I think e.g. his organic chemistry videos are better executed (~10 minutes per video, a bit less packed, better splits by content), I still think that his biology videos are a super-valuable resource. I've been watching some MIT lectures too, but visualizations, which are necessary for biology, aren't properly visible in them. Of the free biology content in the web, Sal's videos are the best IMO.