So, I think I can break this down into somewhat of a checklist for you. It's works best when followed chronologically, at least based on how I've taught it and what my students have found useful. It's set up in a way that builds on your understanding over time. You'll more readily get new content as you learn them. Either way, in saying that, it's quite flexible.
- Make a set of comprehensive notes on JUST theory, aim for ~15 pages.
- Add the most important statistics to relevant parts of the theory, RBA and trading economics are good resources.
- Get a feel of the kind of questions you'll get in exams by doing SA questions. Get your teacher to mark them.
- Start to nail down on what you do well in your responses and what you don't, and then make a generic blueprint for how you'll approach writing your responses from now on.
- Condense your notes into cheat sheets. These will ONLY contain the most important concepts.
- Begin to make 1 pager essay skeletons. Look through past HSC papers and attempt these essays.
I'll also point out that the first few steps will get you the majority of your marks. As you move down this list, each step will add less marks per unit of work done, ie diminishing marginal returns. Jumping the gap from band 5 to band 6 starts at the 4th step. Hope this helps!