Should I use khan academy or just by a text book to learn and review some pre-uni & 1st year undergrad level mathematics for a physics degree? Which would be more fluid and clearer? Is there questions for khan academy? Is a maths books on mechanics relevant, or will any good physics book teach me all the mechanics I need? Background: I've been out of maths for a year but I'm going uni to study physics in a few months, so I want to brush up on my maths skills during that time. Some topics I covered at school were complex numbers, polar coordinates, calculus(taylor&maclaurin, 1st&2nd order diff, integrals), introductory vector algebra. I was thinking about getting Mathematical Methods in The Physical Sciences by Mary L. Boas.