If i use a visa gift card to buy games on gog.com which option do i choose before i enter the info? I want to know because i've never used this site to use visa gift cards to pay for games, i want to make sure i'm doing things right before i buy a visa gift card.

I don't think you can use a prepaid gift card on gog unless it specifically says in the terms and conditions that you can use it for international purchases. Maybe if it's one that you have to register your information first to use.

There's the option of buying a prepaid Paysafecard, although they can be hard to find in the US since it's more of a european thing.

I'm not sure I understand your question. Do you mean which game you should get? You'll have to make that decision yourself. There are sales on this site all the time. If you wait long enough you can get what you want for 50% off or more.

Edit: typo

If you have a Visa debit card, make sure it is registered to your home address, then you will able to make purchases on GOG. I also recommend adding your gift card to your Paypal account if you have one.

GOG's payment processor is based in Amsterdam, The Netherlands, so normal USA-based Visa gift cards will not work on GOG. American Express gift cards, on the other hand, do work on GOG.