Add to Cart & Fill in your Basic Information and Coupon Code;
(If you have a PayPal Account, just click "PayPal" Button to Pay)
Choose the Shipping Method;
Choose your Billing Address and Click "Complete order" Button;
Find the PayPal's Pop-up;
(If you have a PayPal Account, you can Log In and Pay directly, if not, you can click "Pay with Debit or Credit Card" Button to Pay with your Cards);
Pay with your Debit or Credit Card (Fill in the related information as well).