Hi, I am scheduled to take the CBEST in little over one week...I've been working with the online practice test and struggling to understand concepts either didn't learn or have not practiced in 35 years. I've been using the Princeton/Cracking the CBEST. I've just read some reviews of this book...many say it saved them, but a few people say that the book way oversimplified many math concepts and problems much harder when it came to many concepts. So now that I have one week left, I'm ready to do a quick Amazon.com order and try a better book....I'd really love to hear others feedback on what books helped them....keeping in mind I am not recently out of school and so really need step by step instruction and simple but also rigorous study problems (again, some reviewers complained that the Princeton book math review way oversimplified). Thank you so much!