The content in Business studies is easy to know, and sometimes general knowledge. ALTHOUGH for exams you need to use KEY business terminlogy (off syalbus) in order to get the higher marks. With such a huge amount of content (5 large topics) you really need to study quite hard, to be able to know every dot point, and be able to write on each. Cramming for this subject doesn't work as well as in say economics.
If your willing to even put 1hr a week of study for this subject(more near exams), have your concise dot point notes, you should do very well in the subject.(band 6)