What happens after my Buy Now button is clicked?

[Phyremaster]

I'm trying to create a "store" page for my website, but before I make my PayPal Buy Now button, I want to know what happens after it is clicked and the buyer completes the PayPal forms. Is a value returned to my webpage/server? Do I get an e-mail? There is little to no documentation on this part of using PayPal Buy Now buttons; I've been on Google for hours.

Thanks for helping!

[sharpiemarker · Accepted solution]

You get a PayPal payment notification email that payment was sent to you.  

If you added any advanced variables to your button in step 3 in the button generator like notify_url where you provide the URL to which PayPal posts information about the payment, in the form of Instant Payment Notification messages, then that will be triggered.