I have been braiding for years; bracelets, cords, etc. When I grew out my hair, I braided that, too. I know how to do a basic braid.
This book showed me how to do ropes, herringbone braids, as well as a few braid hairstyles. I haven't really used the ribbons, etc that came with the book; I have enough barrettes, scrunchies and what have you without those.
However, for anyone who doesn't know how to braid, I immediately recommend this book. The step by step instructions are stellar.