Here is a collection of links that I have gathered over time.

Certification/Books/Software/Technical

Applying your CompTIA Credentials to MS Certifications
Anonymizer Privacy Software
AnonyMouse
Books 24x7 (online books)
Certification Zone (labs, quizzes, practice exams, chat)
CertYourSelf
Certification Magazine (free subscriptions)
Cramsession
FireFTP (free FTP client for Mozilla Firefox)
Group Policy Resource Center
GraceTech Solutions (certification discount vouchers)
Information Technology Association of America (ITAA)
Learn to Subnet (learn to subnet, free lecture based presentation)
Market Pro Computer Shows
Mergin.org Downloads (Spyware protection tool developer)
Microsoft Training & Certification
MC MCSE Certification Resource
Mozilla Org (web browser)
Prometric Test Vouchers
Spyware Warrior Forums
TechExams (free exams, study guides, and forums)
Tweak 3D
Windows XP A-Z

Web Design

Bravenet.com (free web tools)
Cool Archive (create logos, buttons, and more)
Dynamic Drive (DHTML script source)
Easy RGB (color calculator)
EditPlus (internet ready text editor)
FormLog (free form submission service)
FreeCGI (Free CGI form to email service)
Free WebMaster Tips (extensive color listing reference)
Glish.com (really nice CSS resource, tutorial, and technique site)
HTML Help (HTML validation - DOCTYPEs explained)
HotSyte - The Javascript Resource
HTML Center (web design tutorials and references)
Mike's HTML-Tables-Javascript-CSS-Meta-CGI
JavaScript City
QuackIt (complete list of CSS2 properties)
Red Hat Stronghold Web Server Reference Site
Search Machine Generator (free search engines for your webpage)
VisiBone (printed & online resources - color, HTML, Style Sheets, and JavaScript)
W3C Schools (online tutorials and more)
Web Monkey (web developer's resource)
Web Wiz Guide

Support/Discussion Boards

IkonBoard Services (forum developer)
Invision Power Board (forum developer)
phpBB (forum developer)
OpenBB (forum developer)
Microsoft Technical Communities
TechExams (free exams, study guides, and forums)
VWVortex Community Computer Forum

Retailers

BookPool (discount technical books)
Cisco Press
ComputerGeeks
Microsoft Press
Oreilly Computer Books
TigerDirect

Job Sites

CareerBuilder
ComputerJobs
ComputerWork
Dice
Kelly IT Services
Monster