I studied chemistry and physiology (anatomy) using Khan's video and I can say that it's not overrated at all, it's very useful way of explaining and it really h

I studied chemistry and physiology (anatomy) using Khan's video and I can say that it's not overrated at all, it's very useful way of explaining and it really helps you understand at least basic concepts. Of course to learn anything you have to be motivated, either as an adult or kid. Otherwise you're better of doing it wrong.