Three major different methods of studying for maths, all of which are important, but their relative amounts depend on how your brain works:
- write notes: write up formulae, make sure you cover everying, write out sample problems & solutions that illustrate clearly how to work with a certain type of problem... like a home-made guide book...
- expand your mathematical mind by looking into things like maths groups online, etc... doing extension stuff if you're interested. it helps, just to keep you thinking.
- practising problems, and more problems.... very important when it comes to the hsc!