Visualizing the Web:

An Atlas of Cyberspace *
(archived copy of the original site from the Internet Archive - Just take a quick look at the maps and graphics in the Topology section.)

History of the Internet and World Wide Web

How did the Internet Start? *
HowStuffWorks

How It All Started *
W3 Consortium - Tim Berners-Lee
Hint: Click the Arrow in the Yellow Bar to start the slideshow. Navigate the slideshow with the Arrows (top) or the Next Buttons (bottom)

NSF and the Birth of the Internet *
National Science Foundation

The size of the World Wide Web *
internet live stats

More information if you are interested...

Internet History
Computer History Museum

How Web Servers Work

Online Web Tutorials:

BBC WebWise *

Howto - Learning Guide *
Website Builders

Are you having difficulty keeping all those terms straight? 

Webopedia *