I was a little hesitant to buy this study guide program out of the fear that it was just a hoax but it really did help me pass with ease. Another CPT referred me to this site to help with studying. Plus it just offers more testing materials and the audio lectures are awesome to have so you can listen on the go or along with the book. I did NOT wait till the last minute to study or take the test and was pretty far into the book when I started this study guide through fitness mentors and I went back and did basically all the chapters over again through them with the guided audio. was it necessary…who knows but I passed. I would definitely recommend. Good luck and I hope this was helpful.