I suggest that you go to

www.amazon.com and type in Algebra 2. I have this book, and I know that it is very helpful. It has lots of diagrams and explains how to solve algebra problems. It also has book problems that you can practice. It goes at your pace and explains everything step-by-step, so you learn all the concepts. It may be a little expensive, but it is really handy to study for tests, quizzes, etc.