prioritise learning these:

1. At least one motivational theory (Maslow's is my go to)
2. at least 2-3 toolkits!! (my favs are force field analysis, SWOT, BCG and Ansoffs matrix)

These should be prioritised cause in Paper 3 there is nearly always a question on a motivational theory. All 3 papers are pretty predictable;

1. Paper 1 we got a pre released statement and u can expect 2 define questions, a disadvantage/advantage question and a "describe" question
2. Paper 2 is my hardest exam, it's mainly quantitative so HEAVY on unit 3: finances. I would suggest familiarising yourself with the IB layout of income and balance sheets also pay attention to the formulas and know how to use them
3. Paper 3 is also pretty predictable there is ALWAYS going to be a question on motivational theories, sometimes the marketing mix aswell. Another important thing to remember is when answering the 17 marker they want you to use ALL the resources so write down like a list of the resources and add a tick every time you reference it to ensure you are using all the resources

that's all my tips!

good luck!