Erik's Forsberg's page about Linux - A lot of information for the beginner, mostly the information not provided in the usual manuals. Also some tips and tricks for the more advanced Linux user.
Software includes gravityd, rakd, gbuttond and more.
Creator of From Power Up to Bash Prompt. Ragib Hasan - Contains a brief history of the Linux operating system. One of the first books in a series that trains UNIX sysadmins in a hands-on interactive format. Kevin McDermot Linux Page - Home page with a brief write up on Linux and Open source and it is hosted on his Linux Machine. Wired Digital Inc., a Lycos Network site.