So, I am trying to sell a service through a website. When the customer enters the order page, they will be required to provide specific information needed to provide the service. Then, they will be directed to PayPal in order to process the payment (the only free 3rd party payment system I could find). After that, I need them to be redirected to a confirmation page or have a confirmation email sent to them. What would be the best way to set this up?