These are the sites that i spend most of my time at. You can almost always find me logged onto one of them.
Hardforum is a site where you can look around ask questions and find out just about anything you need to know about computers.
Notebook Forums is basically a site like Hardforum but revolves around the use of laptops.
Fatwallet is a forum based Hot Deals page. You go here and can find information on a lot of things and where to buy them for awesome prices.
Newegg is where i buy everything computer related. It has all the things you need to build yourself a computer at the best price on the net.
Woot is just a cool thing. Check it out.