I have dozens of books in the Dummies series and this book is my most recent addition. This particular GPS book is the second edition and is clearly of American origin because it cites numerous examples within that have a strong American bias. This is perhaps not surprising given the nationality of the author.
The book is comprehensive and written in the usual Dummies 'chatty' style.
I deducted 1-star because I felt this book could have included many more examples of GPS equipment familiar to European customers. They do receive a brief mention but I felt they could have been expanded upon.
This edition was published in 2008 so a third 'updated' edition ought to be published soon.