The PayPal Standard Basic Add-on is the simple and fast version to get PayPal set up for your store. You might use this version just to get your store going, but we highly suggest you switch to the PayPal Standard Secure option.
To use PayPal Standard Basic, you can select the option in the Quick Setup page or enable it directly from the Add-ons page.
Once enabled, you will need to enter your PayPal email address. You can also set the text for the payment button.