This book is very helpful. I’d like to own it. There are many different categories of textures included, such as glass, water, lichen, animal hair, feathers, clouds, bark, wood grain, metals, and stone. I found it easy to follow, although much of it is written in an italic script that can get annoying to decipher sometimes. I learned a lot. I’m looking into this author more. Her catalog is confusing. Reviews indicate some books are practically reprints of previous books.