This book has some really nice patterns in it, and it has some great descriptions of pretty stitches I noob like me didn't know yet.
The problem is, though, that I can't afford to make any of the patterns! Most of the yarns used are expensive. The gorgeous throw in the back of the book would cost £120 to make. Ouch. The patterns don't have a good explanation of what other yarn you could use, and there's not really an explanation of yarn substitution anywhere. On top of that, if you -do- have the knowledge, it can be really hard to find a substitute yarn anyway, since some of the yarns have odd properties you don't find in just any yarn (the cotton/microfibre yarn being an example).
Sometimes substituting isn't much of a problem: it doesn't matter if a throw turns out bigger or smaller. But when you do an item of clothing it's a different matter.
It'd be nice if the book could be edited with more (cheaper!) yarn suggestions.