How to improve knowledge of mathematics?

Question

Books

Good day. I started to listen to a course on algorithms and drowned in simple mathematics like logarithms. Advise a good source to recall the materials studied at school, in increasing complexity with examples and tasks. I am ashamed of myself for this - at school there was a favorite subject that I didn’t teach but understood, I was friends with the teacher, I went to the Olympiads. And now, like a cow, she licked her tongue. I want to rise at least to the level of a freshman at the Polytechnic University.

Answer 1

Print out the formulas of logarithms, the table of differentiation / derivatives / integrals.
Go to mathprofi.ru to the appropriate sections. There just in ascending order.
Useful books:
A series of books: rutracker.org/forum/viewtopic.php?t=3418320
upd:
https://www.youtube.com/channel/UCi3lxprPEKGjpmzzN...