kazzy01,
there's not a lot of study that can be done. I was quite intimidated when I walked in by the number of people fronting with far more qualifications than myself. After the first couple of tests I was thinking that I'd wasted $90 and a day off work. I ended up being one of the minority that passed and got the gig. The key to most of the tests is to stay calm and as relaxed as possible. Rushing will only lead to mistakes. As for the interview process mine was rather tame and I don't think I interview too well. Other people on my course apparently got put through the ringer so who knows? I will say if you get an interview try and take a time early in the day. The panel may have a human or two on it and they will be well and truly over it by the time they speak to the 12th person that day. Good luck.