Mathematics, are there special books like "matan in 24 hours"?

Question

Mathematics

I'm very dumb and sometimes I can't solve simple problems, but I was good at school ...
I want to improve my matan, I understand, probably the best option is to dig up school textbooks. But are there any "cheat sheets" or "recipes" books? I don't know how to say... I hope you understand :)

Answer 1

Vygodsky "Handbook of Higher Mathematics", "Handbook of Elementary Mathematics"
Series "Mathematics at a Technical University", publishing house of Moscow State Technical University named after N.E. Bauman (volume 21 in my opinion)
I doubt that you can do it in 24 hours.
Yes, and not the kind of science to know so quickly.

Answer 2

reminded

Answer 3

mathprofi.com