This book is a great resource for anyone that wants to nail down techniques in expressing problem textures. It isn't so much a book that consist of huge amounts of information in the basic principles of drawing but rather there is enough in there in using the techniques to teach people those principles anyway. In short its a great 'get stuck in and draw something' book that deals with what i believe are the things people want to learn the most, i,e textures like fur, hair, rock, wood, water, glass etc..The single biggest thing this book provides is it gives you a great sense of improvement in your drawing after every page which in turn drives you on toward further developement. It doesn't endlessly drone on about how important this principle or that principles is which many (if not most) drawing books are guilty of. As someone that has read and owns countless drawing books, i rank this one as one of top best teaching aids.. It shows you what doodles and marks to make on the paper to express the textures in a down to earth personable way, and that teaches people a great deal more than endlessly harping on about pretentious things like 'the perceptions of this and that' or even more condesending 'seeing as the artist sees'...grrrrr. If you just want to know how to draw a damn thing and make fur look like fur, and water look like water, and clouds and wood bark etc, then get this book.