If you are entranced by the Web, you will enjoy Rule the Web, How to Do Anything and Everything on the Internet -- Better, Faster, Earlier. It's not a Web for Dummies type of book. It assumes you know how to navigate the Web. The author is Mark Frauenfelder, founder of Boing Boing, an interesting blog full of oddities.
The book contains tips and recommendations on what you can do, and where, on the Web and on your PC. A few examples: