A fantastic Puberty Book for 10 to 13-year-olds. If your child is younger, and girls can start puberty from around 7 years, you should read this book first, and then share the parts you think are suitable for your child's maturity level. This Puberty book will help your child to understand what you are going through, without information about sex, which is more suitable for older teenagers. This book covers topics such as confidence, moods and feelings, pressures of growing up, bullies, physical body changes, periods, and boyfriends.