Am only a little way into the book, so am star-rating it provisionally . . . I was almost immediately disappointed to find that the headings that are to appear in green throughout it (according to introduction) and do so in the hardcover edition, do NOT do so in the paperback: all is black and white, hard on the eyes and generally, to browse through, to take in. Had I known this in advance, I'd have looked for a hardcover copy, even if used. I guess it's always a good idea to research as thoroughly as possible before buying, and also, taking advantage of the LOOK INSIDE features the bookseller provides.