Websites that I recommend:

 Computer Parts
Newegg - http://www.newegg.com

Microcenter - http://www.microcenter.com

 Computer Customization

Xoxide - http://www.xoxide.com

 Free Software

Music Player

Songbird - http://www.getsongbird.com/

Image Manipulation

Paint.NET - http://www.getpaint.net/

GIMP - http://www.gimp.org/

Operating System

Ubuntu Linux - http://www.ubuntu.com - http://www.xubuntu.org

Instant Messaging

Pidgin - http://www.pidgin.im

 Email Client

Mozilla Thunderbird - http://www.mozillamessaging.com/en-US/thunderbird/

Web Browser

Mozilla Firefox - http://www.getfirefox.com

 Anti-Virus

Avast Anti-Virus - http://www.avast.com

All of the websites I listed here I personally use. I wouldn't recommend something I didn't trust.