This book is a good intro/review of beliefs other than Christianity (although there is some information about that as well). The book falls a little short in its over simplification of some of the religious groups (such as Judaism and the Jehovah's Witnesses), and some of it may even be a bit misleading because it's overly broad, however I would still recommend this if the reader was looking for a quick read on the differences between various religious beliefs and sects in the world.
This little book is perfect for introducing teens to world religions. It is concise, but gets the main points across quite well. Includes how the Bible disputes each religion. A good launching site for further comparisons of the religions. Nice layout and colorful design.