Congratulations, you sold another product! Now you just have to confirm the order with the buyer, find a box, pull the product off the shelf and add it to the box with the correct paperwork and packing material, print the address label and get it to the post office for shipping.
All done? Hmm, what about their access to the membership site and the online part of the product or bonuses? Then what about support followup or education on how to use your product?