How good are Cram101 books, are they worth buying?

[norema]

Study all of the material for both tests before taking one. These are related so taking the two as a pair is a savings in effort. IC, the exam specific forum, and again, the GRE book.

Also, I think that all of the publisher sites for the textbooks have online quizzes and summary information. I used them with most of the EC tests.

Looking through everything that I need to study, how in the world did you do it in 3 days? I feel overwhelmed just looking at all I need to do for one exam, I suppose the only good with them all is that all three are related. That is primarily why I'm taking them. To hopefully get the same bang out of what I did with all of the statistic related courses through ALEKS. This however, is much more studying and obviously much more money to loss.