I read this book some time ago now, whilst flirting with the idea of studying philosophy; I wanted to know what I might be getting in to.
Reviews on this site have often slated the book for its lack of depth, but this loses sight of the books objective. After reading this book, you will not come away with an in-depth knowledge of the workings of philosophical branches, their history, or some such. You will, however, know what these philosophical branches are, who has been of particular importance within them, and which branches interest you enough for further reading. This is an introduction to philosophy, nothing more.
Of all the introductions I have read, and there were a few during the afore-mentioned period, this has been the most useful to me. It provided me with a stand point from which to progress from. If you have only a vague idea of what philosophy is, or if you wish to briefly sweep across its main branches, this book is for you.