cheap online or book resources for CSCS?

[PowerHungry]

I don't know if this question better suited toward SnP or here. So I'll try here first.

I tried the search function and it was a little help but not much. I've also tried my local library and university library and not much luck on those either. I tried Borders, Barnes and Noble, and local used bookstores. No luck with those either.

I want to work toward becoming a CSCS but I don't have a ton of money to buy the preparatory material from their website at the moment.

So does anyone know about some good materials that are cheap or good places to find them cheap? Or maybe unrelated stuff that still provides the same knowledge for the test?