I bought this book because I thought Bernhard Hoecker is a funny comedian and this book will also be fun... I started reading it some weeks ago and never finished it. At the beginnig it was fun to read and to learn about geocaching, but in the end it was just a pain. Hoecker told about this cache and that cache and it was almost always the same. No more fun, just pain.
So I would recommend to not buy this book.