So I just finished up "Naked Economics" and am reaffirmed in how good that book is. When I start teaching AP Macro again, I will be assigning it as summer reading. The last chapter of the book, on Developmental Economics, in particular stands out. It does such a great job of dissecting the determining factors of a nation's economy and does so without putting you to sleep. Highly recommended. No charts, no graphs, just great explanations, examples and information.