How to join Xbox Live Gold after setting up your Xbox One console
You have your Xbox One console all set up. Congratulations! Now what?
You'll want to get an Xbox Live Gold membership to maximize the benefits of your Xbox One console. Here's how you do it:
Press the Xbox button to open the guide.
Under Account, select Subscriptions.
On the Subscriptions screen, select Learn about Gold membership.
On the Xbox Live Gold page, select the level of membership you want. If you have a prepaid subscription code, you can redeem it by selecting Use a code. To exit without signing up for a membership, select No thanks.
If you don't already have a credit card on file, enter your credit card information by selecting Add a credit card.
Follow the remaining steps to set up your Xbox Live Gold account.