no
yes and it doesn't matter if you put it on via the ipod or the computer
yes
It's on the back... you have to scratch some stuff off and there it is!!
You have to buy one first.
16
Ebay
yes go to itunes to redeem it
Itunes giftcard, store giftcard, music cd if they're like 12 or up
No, you can only redeem an iTunes gift card to one account
yes
YES. You need an itunes acount.