I purchased this book for my ten year old son and I am so impressed. It tackles the subjects of puberty and sex with language that is accessible and clear, and has pictures in a life-life cartoon style, which makes the facts seem less overwhelming. There is also a focus on health, self esteem, and being understanding to those around you who may be going thru puberty too, which is great. I absolutely recommend this book for boys aged around ten, who need a gentle introduction to all the facts so they can be prepared for what they're about to go through, without being freaked out!