On the topic of security, I was informed that there are "preview" classes of actual SANS courses that they provide free online. These previews are about an hour long, and are a brief overview of what the actual course is like, but some contain useful information and knowledge about new tools that can be used.
http://www.sans.org/athome/ There is one coming up in April on security! Just look for the word "Preview" before the course, otherwise you'll have to pay thousands of $$ haha. -Josh Smith
