Linux sites ( o/s )

www.ubuntulinux.org
http://www.redhat.com/
http://www.distrowatch.com/
http://www.suse.com/
http://www.knoppix.com/
http://www.debin.org/
http://www.hbedv.com/
www.linux-india.org ( support)
www.linux.org
www.linuxgazette.com
www.linuxplanet.com/linuxplanet

http://openubuntu.blogspot.com/index.html

http://www.aplug.org/(A.p site)
The Linux Documentation projects*
http://www.tldp.org/