Linux distributions on CD very reasonable price. With a percentage of any surplus going to support the development of the individual Linux distributions sold. Free UK first class postage.
The LinuxQuestions.org Hardware Compatibility List allows users to see whether their hardware will work in Linux. Any member can add an entry and the HCL is free to use.
Taurus Software and Consulting's Linux Pages are dedicated to providing information on running Linux with partictular hardware, like scanners, printers, modems. It is also the homepage of the Linux on JavaStation x86 piggyback port.
AMD supported site dedicated to porting GNU/Linux to new AMD x86-64 architecture. Eventually, you'll be able to download full Linux distributions for x86-64 from this site.