I think this book is good for people ages 11 and up. The title explains it all. I did not read all the chapters though in the book, I just read the ones that I thought were interesting and the ones that I thought I should read to learn more. It's based on the magazine GL (girls life) for those who don't know. It has quizes, opinions of real teen girls like you and me and gives great advice for those who aren't quite sure. ( )