http://www.ibm.com/developerworks/cn/linux/ － IBM developerWorks 中国：Linux
http://www.tuxfiles.org/linuxhelp/ － the Linux newbie help files, tutorials, and tips
https://launchpad.net/ － 这个不知道是什么，好像是。。。
Launchpad takes a new approach to free software project management and hosting. It helps you to work more effectively with other communities to solve common problems, such as shared bugs.
