You unplug it from your computer AFTER clicking the "Eject button" which also gets rid of the iTunes.
If i have understood your question correctly then: on iTunes > iPod > Restore Factory Settings and that should basically wipe all data stored on the iPod. I advise you back it up first.
i tunes
No it just makes it so you can buy things off i tunes again!
no. you have to go to i tunes
yes you can use it on an ipod nano
i tunes file add folder to library then sync or drag them to your ipod
You can get apps from the Internet but they redirect you to the i tunes store.
i-tunes
chair lift look on i tunes chair lift look on i tunes
there is a slim chance that your iPod will be damaged by downloading free tunes unless the person that uploaded that free tune designed it to destroy your iPod however this is unlikely and if your iPod is damaged you can restore it via your PC or Mac
Yes, restoring your iPod will take off the jailbreak, and you will have to jailbreak it again.
It takes out on your I tunes account.
i tunes is da best for it