Also: Bear with me, I'm only 13 and this is my first instructable, please comment if this helped you :D
Step 1: Getting RockBox
1. So first determine what ipod you have (you already know that, don't you?)
2. With the name of your iPod fresh in your mind, go to http://build.rockbox.org/ and find that very iPod from the list.
3. Click on it (hardest step!)
5. You should now be downloading rockbox.........