geeks.com
Geeks.com is a great place to buy discount computer stuff. I have been buying from them for years. They sell other consumer electronics items as well. I find that very often Geeks.com gives the best price on a particular type of item. They are in California, so shipping usually takes a little under a week unless you pay extra for a rush.
www.dslreports.com/tools
DSLReports.com has been around for a long time. This set of tools will help you test the speed of your Internet connection.
www.smallnetbuilder.com
Tons of networking information. Maybe too much for the average user. Nevertheless, you can probably find an answer to your networking question here.
h30187.www3.hp.com/index.jsp
This wacky URL actually points directly to the HP Learning Center. Here you can register and take online classes in a variety of technical disciplines. And did I mention that it’s FREE?
http://ocw.mit.edu/index.htm
The people at Massachusetts Institute of Technolgy (MIT) have put lots of their course materials online, FREE for you to access. There are tons of different subjects, not all computer-related. I thought it kinda cool.