Network Professionals

Iron Geek - -  Hacking Illustrated

http://www.irongeek.com/i.php?page=security/hackingillustrated

Email Encryption -PDF-
Download

Home Users

Router Suggestions -PDF-
Download  

Software Firewalls and PC Tips -PDF-
Download

Top 3 Software Filters -PDF-
Download

Excellent Security Videos and Security Tutorials for Home users

http://onguardonline.gov/tutorials/index.html

Backup and Data Securing Software

Dekart Encryption Software -Download Now-
Syncback Backup Software -Download Now-
Blacklight Rootkit Finder -Download Now-
CCleanup -Download Now-
nLite -Download Now- 
Windows Defender -Download Now-
File Scavenger -Download Now-
AVG - http://www.download.com/AVG-Anti-Virus-Free-Edition/3000-2239_4-10320142.html
Diskkeeper- http://www.download.com/Diskeeper/3003-2094_4-10471739.html
A-Squared- http://www.download.com/A-squared-Free/3000-2239_4-10514472.html
Zone Alarm- http://www.download.com/3000-2092-10039884.html