Once you have made a seller account, which can be done by logging in/creating an account and then visiting the application page, you will have access to the Seller Dashboard.

Here you can view your sales data, orders, products and payment information. 

From the Seller Dashboard there is a button to add a new product, or you can visit this page here.

Please allow up to 24 hours for your products to be approved and published once submitted. To request an edit to your product listing, please contact us.