Register for events online. You will have the option to pay at the door the day of the event (cash only) or pay online (using debit or credit card via PayPal). Select, add to cart, and proceed to checkout. During checkout, you can choose to pay at the door, or pay online using your credit card or debit card (via PayPal). Once registration is complete, you can print your receipt (even if you're paying at the door). You will receive an email, as well, to keep for your records.