I will temper this review by noting that this is a _phrasebook_ and not explicitly intended as a learning tool. The book could be useful as a way of looking up something you want to say (if you can find it) and pointing to the chinese writing, but that's about all.
Cantonese pronunciation is very complicated, and this book isn't very helpful in explaining it. The section that tries to give a broad introduction to the language is terrible. For example, early on it gives a list of 8 "useful verbs" which is missing staples like "to want" and "to have", and in fact only has about 3 that are even remotely useful. One of the listed verbs is "to trick" -- a word that every traveller struggling with a language wishes they could remember.
The majority of this book is organized by topic. Within each topic, it goes into too much depth to be able to find anything quickly, but being a small book it is not comprehensive at all. The dictionary section in the back is tiny and not very useful either.
My copy ended up in a trash can in Hong Kong a few days after I bought it.