Essentially this is an ideas book, encouraging the artist to find inspiration in unusual places, such as cloud formations, puddles or randomly dropped drawing pins. What lets it down is that the text (what little there is) is dry and academic with no enthusiasm apparent. I picked the book up in the children's section of the National Gallery shop on Trafalgar Square, but I couldn't imagine children (or me) gaining much from it.
My other complaint is that the pictures and captions don't seem to match, and that the pictures are pretty much all in black and white. The captions are difficult to read on similar coloured backgrounds. For £7:99 I'd have expected more.