How to Add Products to an Online Store
Once you've entered a valid PayPal Merchant ID and successfully activated an online store, you will now see a new "Link" option available, labeled "Online Store". This link is accessible from any button on your website. For example, you can display a product using the Image Post and adding a button to "Add to Cart".
When you choose the "Online Store" link option, you will be prompted to Choose a Product if you have already added one, or simply "Add a New Product".
Click "Product Options" if you would like to offer different variations, colors, sizes, etc. You will also be able to assign a unique price for each option.
Add the product and post it to your site. Customers will now be able to purchase this product from your website.