I do Business Studies and there isn't too much hard revision to be done in all fairness. Make sure you know how to write using a PEEL (Point, Evidence, Explain, Link) structure and your essay-style questions should go well. Also, make sure you know how to identify key information by skim reading (doing past paper questions helps with this - even though it's a new spec).
Also make sure you know the formulae as they are very important (however a lot of them can be put down to common sense).
I'd also recommend spending some time revising over and drawing up some decision trees, Blake-Mouton grids, revising the Tannenbaum and Schmidt continuum and other new terminology that can't be understood through common sense.
If you do this you'll be absolutely fine in business and good luck with your revision and exams!