Wikimedia
Wikipedia: Mac Os History
Wikipedia offers a simply stated history of the Mac OS, or operating system, including table of contents and hyperlinked terms.
Other
How to Deal With Common Mac Os X Problems
This site by Randy B. Singer offers solutions to many, many problems with Mac OS X Jaguar, in hyperlinked table of contents form.
Computer Hope
Computer Hope: Apple Computer Shortcut Keys
Shortcut keys help provide an easier and usually quicker method of navigating and using computer software programs. Here is a listing of Apple Mac OS keyboard shortcuts.