Comex College Math practice book

Hey everyone, new here but been looking into taking some more CLEP's. Seems like the college mathematics one is pretty popular around here. I've searched around and found that a decent amount of you recommend the Comex "Review for the CLEP General Mathematics" book. I found it on Amazon but was wondering, is this a good one for the College Mathematics class, or is it just general math? Also does it teach you "how" they solve the problem, or is it just a lot of practice problems? I've been out of school for a while and need some refreshing before I take the CLEP.

Thanks, I appreciate it!