I've not had this long enough for a detailed review, but so far I'm very impressed. Mostly I've been doing flush setting with facetted stones, just starting to get into doing bead setting; however, I've seen a fair number of tips & techniques that I've never seen in print before.
The first major chunk is understandably given over to bezel setting and goes way beyond the normal "make an oval, squish it over"; there are a lot of suggestions for tackling stones other than the standard cabochons, tips for correcting things when they don't quite work out and so on. Then there's crown/collet, prong, graver settings, gypsy, flush & Roman, a bit on channel setting and finally dealing with pearls & beads.
If anything, I found the graver settings section slightly sparse - there's stitch setting and basic bead covered; there's mention of illusion, plate and pave but no additional detail on them. However, the text on preparing gravers looks fairly thorough, so I'm probably asking for a book twice the size... The other thing I'd quibble is the photographs used - it would be nice if a) the settings in the photos corresponded to the settings being discussed and b) there was a little more description of the jewellery in the photos!
All in all, an excellent book (especially for the price); a detailed discussion of a decent number of settings that are fairly easy to do. If you're in the UK, make sure that you have a mm/gauge conversion table handy though.