I graduated from Pitt last Spring. Best studying advice I can give is to do practice questions. Do not worry about re-learning things. The best way to learn the material you are weak on is to do questions day in and out. I suggest Kaplan, they best prepared me for the process of thinking through the passing level questions. I also found EXAMCRAM to work wonderfully. They have 5 exams in their book, and the exams get a little bit more difficult each time. I thought the first three exams in the book were very easy, but they reviewed a lot of material I had trouble with. Good luck!! What type of unit were you hired on??