I know what you are saying - "what is a QR code" well its a two dimensional bar code which can be read by most SmartPhones as long as you have the right App.
Why not try it - first go an get the app for your device - this is quite easy - just search for QR code reader.
How that you have your reader try scanning it (using the camera on your phone):
It's amazing isn't it? Well we think that it is really cool anyway!