The DEEP Web
There is an excellent explanation of the deep web from Albany College.
A very useful glossary of Internet and web jargon with some computer terms scattered about is made possible through UC Berkeley.
How Can You Find Anything on the World Wide Web That's Actually Useful? is a great place to start looking for things that don't come up in your searches. It is maintained by John R. Henderson, a librarian at Ithaca College. Useful subject directories and sites can be at the tip of your fingers.