Downloadble courses are a boon for teachers. 1998 Updates seem to be ongoing. Another beginner's guide, fairly basic, and in clear language. Email and browser-specific help, newsgroups etc. You'll need to read this page to set it up first.
Updates seem to be regular.
Practical topics for using the Net. Commercial product, this page gives a thorough overview. Practical uses of the Internet. Each document covers a specific aspect. Good training materials, and guides to subject-specific networked information, tutorials.