There's a few books on how to approach books and problems, e.g. don't strain on first seeing new material. Lara Alcock wrote 2 books on studying math which see

There's a few books on how to approach books and problems, e.g. don't strain on first seeing new material. Lara Alcock wrote 2 books on studying math which seem to have the same ToC, a lot of undergrad programs have materials on proofs and how to transition from high school problem solving: http://web.archive.org/web/20150319020039/http://www.maths.cam.ac.uk/undergrad/studyskills/text.pdf http://web.archive.org/web/20150319020039/http://www.maths.c... Mathoverflow and math.stackexchange soft-questions tag has lots of mini-essays, e.g. https://mathoverflow.net/questions/143309/how-do-you-not-forget-old-math https://mathoverflow.net/questions/143309/how-do-you-not-for... and https://math.stackexchange.com/questions/617625/on-familiarity-or-how-to-avoid-going-down-the-math-rabbit-hole https://math.stackexchange.com/questions/617625/on-familiari... ____________________ For proofs, books by Polya, Velleman, Hammack etc Prof Baez' reading lists for math and physics: http://math.ucr.edu/home/baez/books.html http://math.ucr.edu/home/baez/books.html