This book is exactly what it says, it’s a Dictionary for the Skeptic, and it covers subjects from ESP to the Yeti. It is a very good book, each subject is covered well and tries to be scientific and is for the open minded. 

It has a decent Bibliography which tells you that this book has been researched quite well. 

This book I would recommend, you can start to read any section and as much or as little as you like, I think that it would appeal to a wide audience.