Step 1: Buy a cheap toy guitar

Picture of Buy a cheap toy guitar
The first step is to go to your nearest Wal-Mart (or the like), and buy a cheap electronic toy guitar with at least 5 buttons on the neck. I found the following one for 9.95$CND.

While you are doing this, download the free Guitar Hero clone Frets On Fire. You can also find on the web all the songs from Guitar Hero I and II! All for free!