Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Quite simply the best all-round "how-to" watercolor book.

If you're looking for a general purpose, intelligent and informed book on watercolor, this is it. Webb -- formerly an illustrator/graphic artist -- has designed chapters on motivation, materials, setup, color and values, techniques, composition, design, all illustrated by examples painted by other top painters as well as himself. This is accompanied by pithy, appropriate one-liners quoted from philosophers, artists -- whoever his incredible memory finds the most apt. He encourages painters to experiment, take risks -- after learning the necessary first. As a watercolor instructor, and author of a book on outdoor landscape painting in watercolor, I recommend Frank Webb's two books, Nita Leland's book on color, and David Lewis' "Watercolour Painting Techniques." That's all you need for starters.