Instruct: Classify Amazon reviews into positive or negative sentiment
Query: There are better overall airbrush books.

All airbrush books have to explain the technical stuff of the little machines you paint with, but this one moves quickly on to paints, the several masking techniques, and such art basics as perspective, shading and color mixing -- obviously, for people who have no prior art background. Halfway through the book, we finally get to using the dratted thing. They also show that truly fine "airbrush paintings" still require the brush or colored pencil for the finer points.