Just Linux
Welcome to justlinux: wanna learn linux?
http://www.justlinux.com/
Linux World
Linuxworld: featuring the latest linux and open source news from network world. the idg network and you.
http://www.linuxworld.com/
Linux.com
A means to world liberation! our goal is to provide all the information necessary to make your use of linux a success.
http://www.linux.com/
LWN.net
LWN.net
http://lwn.net/