What is the best way to prepare for the College Mathematics CLEP test?

I am pretty decent at math, but I want to be completely prepared for the CLEP test. I was wondering what are the best books and courses for the test?

Always a good suggestion: find yourself a copy of the CLEP Official Study Guide book. It doesn’t matter which edition/year. You can purchase a brand new book from CLEP, but I always suggest seeing if your local library system has a copy on its shelves. If it is, you can either make photocopies of the pages you need or you can see if you can check it out.