After learning how to make art to please tutors and sell to rich people in uni, this was the tonic I needed. I'm excited about my work again. However, if you're already into guerilla art, it really is just a beginner's guide, a starting point. It's also perhaps a little insubstantial, in terms of content, for the price. It's a cute little book, nicely presented, and would make a nice gift, although some may feel that it doesn't exactly discourage breaking the law, so that might affect who you'd buy it for.