Implement the Drop-in Checkout in your Website
You can read more about the Web SDK in the link below.
Most applications out there need a way for users to signup and login to access member-only resources. You can build your own user management system and deal with this on your own or you can use third party solutions (like ours) that solve this problem for you. Abowire lets you do both.
You can read more about how we handle users with the Drop-in Checkout here: