I got the book from Amazon the other day. It's a good book and worth the purchase. I've been making signs and following this board for a couple of years now, so nothing was a major surprise. But, it's very well organized with good explanations of the techniques. It's a great reference volume. Pick it up and browse when you need a little inspiration. I was especially delighted with the sections on SIGN SHAPES and TEXTURES. I tend to forget how easy it is to modify existing shapes to make the sign unique.
If you're starting out or unfamiliar with making signs, it's a gold mine of information.
This book is a great deal for the price. I can see flipping through it often for some inspiration.https://www.amazon.com/gp/product/1088773680/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1