The one thing you must do is to backup an unencrypted copy and then place it in your safe. Too many folk encrypt their last and only copy of stuff they can't lose then explode as the decryption fails and they discover that without the key or such system the files are gone.
This is your PC. Why would you let anyone use it?
Need an app that can hide my personal pictures and videos, as well as some applications. Please help me and give me some good suggestions on this.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic