I passed my CSCS in early 2006 and purchased the study materials directly from the NSCA. I finished my BS in Exercise Science that spring.  Honestly, I think what I was taught in class had little to do with me passing.  If I remember correctly, everything you will be tested on comes from the NSCA’s resources.  I read the entire textbook with highlighter and notepad in hand.  I had to tape the book back together by the end.  Listened to all the materials and read everything else in the package.  It was a tough
test, but definitely doable.  This is pretty much the package I bought. 

http://www.nsca.com/Store-Detail/?CID=2147488944

It was much cheaper 7 years ago!   

Good luck!