This computer museum from the Museum of Science, includes online hands-on exhibits.

See what's inside my PC? - Explains all about the insides of your PC - has drawings and clear text.

Stanford University - Mathematical and Computer Sciences Library

PC Webopaedia  - resource for information about PCs. Contains definitions of 2,000 computer terms, plus links to web pages related to each term.

TechWeb Technology Encyclopedia - search for over 11,000 definitions of computer and technology terms and concepts.

Learn JavaScript with this online interactive tutorial.

Here is a free CGI archive.

Learn Dynamic HTML here.