E-Z Rules is great. It definitely saved me last semester. If you want something that breaks down the concepts, try Examples and Explanations. It's recognized as the BEST supplement for Civ Pro. I used it last semester and I agree completely.
The practice problems are especially good prep. You're likely to be tempted not to write out the answers to the practice problems, but I think you will get more out of it if you try to at least outline the answers, especially those for SJ and other important concepts.