You can use an iTunes card for purchasing apps at the app store. Maybe your card still has a value of $40 because you downloaded a free app.
Yes, if you are playing on an iDevice, the purchase will go through your iTunes account.
The App Store on iPhone and iPod Touch is integrated into iTunes. In order to purchase applications, music, ringtones, and other items in iTunes, you will need to add a major credit card with Visa, MasterCard, Discover, or American Express logos. You can also link your PayPal account to iTunes to have the money automatically deducted. This is a good way to set limits on iTunes purchases, although iTunes does have a built-in feature to limit purchases.
To restore in-app purchases in Infinity Blade 2, you must download the in-app purchase again. You must use the same iTunes store account name from the original in-app purchase.
No
No, free iTunes purchases will never appear on your credit card bill.
No. Purchases from iTunes are digital downloads only. It is highly recommended that purchases from iTunes be backed up to external media (external hard drive, CD, or DVD) regularly.
you can't
You cannot make an app for the iPod to put up on iTunes for free. The app making software costs hundreds of dollars to purchase.
Yes. Simply sign into iTunes with your Apple ID through iTunes' preferences menu. Upon entering the iTunes Store, you can access all of your purchases by clicking the "Purchases" link on the right-hand side under "Quick Links."
An iTunes Gift Card is used for music/video/games/apps purchase from the iTunes Music Store.An Apple Store Gift Card is used for mac hardware and software purchases either in-store, or from the Apple Online Store.
In iTunes, go to "file" then "transfer purchases from [your iPod]" Don't know
with the ipod plugged, open itunes, go to File/transfer purchases to computer