How should I learn it? I haven't been able to find any maths courses for people who aren't in school. Websites would be fantastic, names of good textbooks that explain things well would also be good. Or any tips.
Ever tried to learn something just to prove you can? How long do you think it will take me, since I have more of an attention span than I did as a teen?
edit: I'm Australian.
I'd like to revise everything to do with Maths, and do physics at the same time haha.