This site provides the basics, with good illustrations and clear prose.
Links give examples of how to use the section of the Internet being explained.
The printable version is freely distributed by noncommercial organizations. Users new to the Web looking for informal Web based instruction should visit this site. The Internet help desk's troubleshooting button links to a variety of charts that explain cryptic error messages and the appropriate responses. Contains interactive self placed tutorials on the WWW, Email, Library Resources and Newsgroups. In That Box is a basic and non technical introduction to the innards of a personal computer, with pictures.