I appeared for my International Advanced Levels this June. However, I couldn't clear a few units in June hence I am reappearing for them in January. Most probably, I'll be starting my University next year (I'm applying to Australia for my undergraduate course). I will be doing Bachelor of Business and Commerce hopefully. But the problem is, for both my O and A Levels, I didn't take Commerce related subjects(Had Physics,Chemistry and Maths for A Levels) so I'm totally new to it. So, I'd like an advice...as I have some time, should I go through the basics to help me get an idea on the subjects or the first year in university is enough to develop myself for the course?
What should I do?