Repository - Knowledge Base - Technical Documentation - White Papers - Cook Books etc.

www.ebookee.org
www.securitytube.net
www.wired.com
www.geek.com
www.certcollection.org
http://blog.lifeoverip.net/
www.hackthissite.org 
http://signalsec.com/index/13/RESEARCH
http://opensuse-guide.org/
http://www.zdnet.com
http://www.networkworld.com