How to shop online with a debit card?

I have a high school checking account chase bank debit card and i wanted to buy something online but the site only has payment options of credit,paypal,or money order/check.How can i buy it with my debit card?|||If your debit card has a MC/VISA logo then use credit. If not set up the checking account in Paypal.|||If your card has a Visa/Mastercard logo on it, you select credit. If it does not have the logo, you cannot use it online.