My first experience with a CLEP exam was back in Feb of 2005, I went in cold turkey for the US History II exam. I almost cried when I made a 49, 1 pt too short. The next time I took the test I bought REA book and I made a 56 on the test. My test administrator told me about this website, and I took the American Government and made a 61. I am going to take the Sociology tomorrow and I hope I pass.

Long story short, never ever go in cold turkey.