I'm Miles from the Social Care team at Shopify. If you're using Shopify Payments, you can choose to manually capture the payment from the customer when it suits you. All credit card payment providers have an authorization period to allow a charge to be made to a customer's credit card. The authorization process first checks that the credit card is valid, and then that the card has enough funds on it for the transaction.
The authorization period will end after a certain amount of time. The length of the authorization period depends on your credit card payment provider. You need to capture a payment within the authorization period to collect money for your order.
Shopify Payments provides an authorization period of 7 days. You will not be able to capture the payment after this time, so it's imperative that you only use this option if you fulfill orders within 7 days.
To set up manual capture of payments, follow these steps:
It's important to note that you will need to manually capture these payments. You will not be able to set it up to capture the payment at the time of fulfillment automatically.
You've also mentioned that you're new to Shopify. I hope you're having fun setting up your store. We're here 24/7 to help support you, so please reach out at any time if you need us. We have a great help center that can help answer most of your questions too. A great place to start is our introduction guide, which will walk through everything from signing up to making your first sale. You can check it out here.
I also recommend checking out Shopify Compass. Shopify Compass provides you with free webinars and courses on things like store design, marketing and more. I'd love to hear about your business.