>>11024533I guess I would mainly advise studying what you're interested in, refer to multiple sources if you get confused, and always read from classic/well respected researchers or books in your field, since these usually give you some insight into (1) how smart people doing smart research actually think, (2) these books usually contain more historical and philosophical commentary then the shitty textbook being shilled on Amazon or in your school bookstore, (3) they're more interesting, and (4) they're cheaper. The absolute worst way to study a subject is by forcing yourself to read some shitty, poorly written textbook. If a science or math book has been written well, by someone who is actually intelligent and genuinely enjoys the subject, it should be easy to get through.
I'll also say that I usually gain more by going from breadth of coverage than depth. By this, all I mean is that while it's good to learn every little detail under a particular topic, at a certain point, you're time could be spent more effectively. For example, it might be good to buy an anthology or two on a subject you're really interested in and just read through the whole thing cover to cover (which I myself have done twice), but in general this probably isn't the most effective way to spend your time, especially because hard problems in a field are usually solved specifically because someone transplanted concepts from a completely different subject - not because they read thousands of pages of material on the same topic.
