If you want to prompt customers to review your any terms & conditions prior to purchasing content, you can enable Terms & Conditions to be displayed during the checkout process.
Before you link the page you'll need to create it first!
Make sure when you paste your URL in you include https:// at the front. Otherwise the link on your checkout page won't redirect correctly.
Terms & Conditions will automatically appear at the customer information page and customers will need to agree to create their account.