basically it is the process of accessing your touch's programming and it allows you to add applications and customize your touch. It's pretty simple and since you can always restore your touch to its original settings, you can't irreparably harm the touch. There are a series of very easy video tutorials on youtube by a kid called the ipodtouchmaster. If you already upgraded to 1.1.2 firmware, you will have to downgrade to 1.1.1, jailbreak, install a program, upgrade, and re-jailbreak. It sounds complicated but isn't. Just follow the tutorials