It's a great book. I highly recommend it.
I'm new to the wonderful world of whisky - hello! - and I've already found things in the book I disagree with, but that's to be expected. It's a great read and very useful. I've already spent far too much money ordering whisky online because of recommendations in there. (Still waiting for them to arrive though - yes, I'm *that* new to whisky drinking.)
And it's very small and easy to carry. I've taken to keeping mine in my bag at all times. I've got a feeling I might need to buy a new copy before the next edition comes out, it's getting very dog-eared.