Don't be fooled by the quirky, child-like illustrations, into thinking this is a simple book; the exercises will make you think in a way that, perhaps you haven't before.
The main problem solving strategies are explained by way of three case studies: firstly, a rock band's poor initial gig attendance, secondly, a goal of saving/earning money for a computer, and finally, deciding which school to attend.
Unless my problem was of a similar nature, I would have difficulty in implementing the techniques; deciding which method to use may be another problem!