You can start by creating a testing account. This means that you don't have to actually process real payments. With a testing account you can run tests and see if chosen and integrated by you features really work. On your side you will need a developer who will be able to implement different codes to see if the integration went through successfully. Code examples have been created by our team for you to learn how to integrate and create a payment form with ease using PHP, Python, Ruby, or any other programming language.
For more information check out our Developer Zone.
You can also read more here: Integrating with a payment gateway via API