This product had mixed reviews. Since there aren't a lot of readily accessible alternatives, I bought it anyway to supplement a recently purchased home gym that lacked much use instruction. As a quick refresher for the relatively new user of a home gym, I feel it is very useful. For the experienced gym user, it would probably be too limited or even simplistic. Although the exercises presented don't all match the capabilities of our gym, I still found / find it useful in helping to see the type of exercises needed to work various muscle groups. It is now referred to occasionally, not daily. Having it to do over again, I would still purchase it.