First create a user account at culturebase.org (help on this in the next menu item), log in and call up the program overview. Watch a movie by clicking on it. The details page will now open. In the next step, please click on "Watch now".
Now select the ticket you want. Now click on the ticket that you want to buy. The payment form will now open. PayPal and credit card are available as payment methods. Please select one of the two and go through the payment process. After your payment you will receive a confirmation by email.