For new buyers, signing up for a PayPal account is now optional. This means you can complete your payments first, and then decide whether to save your information in a PayPal account for future purchases.

Here’s how the checkout works:
Enter your name and shipping address.
You are prompted for your credit card, email address, and phone number.
(Optional) After reviewing your information, you may choose to save your information by creating a PayPal account to make future transactions faster.
Please note that PayPal’s fraud prevention measures remain in effect for buyers who use this checkout. PayPal applies the same techniques for this checkout as it does for other transactions.
Click here for more info on paypal's security