This book is a good starting place for a beginner to Aristotelian philosophy. It is somewhat abbreviated, but it is still worth checking out. It gives a brief summary of each of Aristotle's main fields of philosophy, followed by Aristotle's own explanations. I have looked for the 'Pocket' version of other philosophers' works, but I haven't seen any. So I guess just Aristotle's works have been condensed in this convenient form. For a novice, or even a student of philosophy, this book is a useful and accessible resource.