How do I receive payment?
When the buyer pays, the funds are instantly sent to your PayPal account. If you do not have a PayPal account, create one for free at PayPal

Where do I provide Yessy with my PayPal email address?
In both Easy Edit and Power Edit, there is a section entitled "Commerce" where you provide your PayPal email address.

Am I provided the buyers billing information?
No. For security reasons, the buyer's billing information is not made available to the seller. Also, your commerce information is only available to Yessy and is not viewable by anyone else.