How to keep a secret on the Internet and your Computer. What are the threats, what you can do about those threats, and what you can't. This was not really 'technical' and mostly just common sense; but it's good to rigorously look at how information flows across the digital superhighways of the Internet.
I'm sorry I ran out of time and had to rush through the Truecrypt demonstration. But bottom line, if you want to *securely* save secret information on a computer, Truecrypt is the way to go. Just use a good password! :-)