there are as good or better books out there on shellcraft-the shellcraft books by Kraus and the one by Logan are excellent and usually much lower priced.This book does have some interesting history on "shell grottos" in England, as well as some nice shell mosaic pictures-but this book is only moderate on instructions.Bascally, if you can find this book, like I did, used for about $5, then I say get it, but, in my opinion, it's not worth the $20 currently listed.4 stars.