cambridge skills in australian geography by kleeman. same author for geo interactions textbook. it's pretty good but i wouldn't spend my money on it. i borrowed it from the local library & from UTS lol. anyway, it's better off doing past papers for skills. i know bos is pretty dodgy at times and some of the stimulus materials are either not up or have chunks of 'awaiting copyright'. -- but print all the papers out anyway.
for business studies i used don sykes' getting better results, leading edge & the macq guide. leading edge was good but at times it elaborated too much on stuff that weren't even in the syllabus. getting better results is good too. it's succinct, concise & well summarised. it's got little case studies that come with it and quizzes. i wrote my notes with getting better results (personally because i couldn't be bothered to read chunks of info from leading edge). anything that i thought were too simple or not elaborated well enough, i referred to leading edge. stuff that i couldn't understand from both textbooks, i used the macq guide. god just imagine going through this entire course again- what a freaking nightmare.