Techincal Infomation Sites:
The Commodore Knowledge BaseSet up as a resource which holds general information about all Commodore Machines, the CKB is useful if you're trying to locate specific information on programming, or even game playing (there's a small list on the site)
The FridgeSimilar to the CBM Knowledge base, but the focus is on programming routines, which are stored, all for general public usage in their programs, in addition to some useful programs, such as a 3D graphics routine, and a music program.