If you select payment via PayPal, you will be forwarded directly to PayPal at the end of the ordering process.
If you already have an account with PayPal, you can log in there with your user data and make the payment. If you are new to PayPal, you can register as a guest or open a PayPal account and then confirm the payment.
Please note that you agree to PayPal's terms and conditions and thus accept PayPal's processes.