If you have activated your account (you received e-mail with the activation link), log in and you can create your order.
Put your product into cart:
You will see next screen:
You can continue with ordering and put your next product into cart:
The ordering process we can ends by clicking to Proceed to checkout. You will see your order list:
The ordering you can ends by clicking to "Click Here to Finish Order". You will be redirected to PayPal gateway, where you can finish the payment.