I received a question on a third party website where by I earn supplemental income answering computer and technology related questions.
The initial question is quoted verbatim below.
“I have a $50 AppStore &iTunes card and wish to buy some books with it . How do I go about it?”
Here is my initial response. Depending on what device you are using, you will need to login with your Apple ID. You will need to redeem your gift card and then use your Apple ID to purchase items.
The following how to redeem iTunes card link has the full details. You can use a Google Android, Apple iPhone, personal computer, and Apple Macintosh. You can use both Macintosh and Windows operating systems.
Also, you can use Apple iTunes. You will need a redemption code that you either peel or scratch off the back of your Apple iTunes gift card. Apple allows you to redeem gift cards via iPad, iPhone, and iPod.
Also, you can use a Macintosh computer. You can even use a Microsoft Windows based computer. You would need to install Apple iTunes software.
Google Android users can also redeem their Apple iTunes gift cards. No matter what technology you use, you will have to use an active Apple ID. You do NOT want to forget your Apple ID and or password.
Especially, if you have recurring subscriptions being charged. Once you create or login into your Apple ID, then you can redeem your gift card(s). On an Apple Macintosh, you will be using the Application Store software.
Redemption codes are found on the back of each Apple iTunes and Application Store gift cards. You either pull off a sticker covering the redemption code or scratch off the label covering the redemption code. Apple iTunes software and platform will officially be retired with their new operating system Catalina 10.15.
Three seperate desktop applications will replace Apple iTunes software. They are named Apple Music, Apple Podcasts, and Apple TV. I am assuming you will be able to redeem your Apple iTunes and Application Store gift cards in their new software.
No mention of this in their official support page yet. However, I would check the link above when in doubt.