First and foremost, you need two things:
1) A USB drive
The USB drive can be obtained at any store that sells material items. You should probably get a 1GB or bigger, because 1GB only costs about $10. I am using a 4GB that I have had for 2 years (same as the one in the picture below, just half the memory).TrueCrypt
is an open-source (free for your not-so-computer-knowledgeable-person) software. It uses government grade encryption (256-bit) and better, so you can be sure your data is safe. You can download it at http://www.truecrypt.org/
. After installing it, you will need to restart your computer.