Before buying (or reviewing) a language instruction book, you should consider the purpose of the book. This book intends to give you some basic speaking ability in Chinese in a relatively short amount of time, to help you express yourself while traveling, shopping, eating, and doing other typical tourist activities. It does an excellent job of that. If you're looking for more than that, choose a book that better meets your needs.
The book is divided into 24 lessons, with the suggestion you study each one for 10 minutes. That's just 4 hours of study, plus however much time you want to spend practicing. This won't make you fluent, won't teach you to read/write characters, and it won't really help you understand someone speaking Chinese to you, but it will give you the basic speaking skills it aims to provide.
There are flash cards to cut out and practice with, and sticky labels to put on things around your house. The words are written in Pinyin, which is a romanization of Mandarin words based on their pronunciation. Pinyin pronunciation isn't obvious to English readers, so the book includes additional phonetic spelling. For example, it tells you the PinYin word 'jie' is pronounced 'jee-eh'.
There are a number of exercises so you can practice what you've learned, which helps you remember.
If you'd like to build a good foundation of common Chinese words and phrases with a minimal amount of study time, then I think you'll be happy with this book.