Don't forget Sherlock

AppleCare Knowledge Base
Apple's knowledgebase with product information, technical specifications, and troubleshooting information.

Apple Software Updates

MacFixIt
Trouble Shooting solutions for Macintosh

Macintosh Operating Systems
Information on Mac OS's from 7 -> X and Mac OS 101's (Check out the keyboard shortcuts)

Online dictionary & thesaurus web linking lookup reference tool.
Contains a dictionary of technology terms

The Macintosh Guide Book
www.everymac.com - This site has a built in search and a section on Mac systems

VersionTracker - Mac Software Update
Number one Site for software updates

HP Support

Totally Drivers
Your Online Resource for Drivers and Web Development

Tucow Software Library
Download software for most any workstation Mac, Windows, Unix ...

Download.Com

Virus Central
Library of existing viruses

Apple-History
A better resource than Apple's web site for information on older Macs. Check the Gallery section.

Apple Macintosh News at MacCentral Online
Site with tons of Macintosh Information

Welcome to AllExperts.com
Online Help Desk

Online Technology Magazines
Welcome to MacAddict
Welcome to ZD Net