With the Google Shopping Feed app you can easily sell your products to Google Shopping. App installation is free, you have to enter your control panel in the App Market section.
To be able to sell Storeden products within Google Shopping, first you have to create an account directly on Google Merchant Center from here https://merchants.google.com/Signup. Next, you have to copy the Storeden feed (which you'll find inside the Google Shopping Feed app once installed) in the Feed section of the Google Merchant Center settings panel. You will need to provide the feed url as this example: https://store-name.storeden.com/google-shopping-feed.xml Pay attention! If you want to enable a Google Shopping campaign to sell your own ecommerce products, you will need to have the HTTPS secure connection site and then activate an SSL certificate. Here you can find the guide: how to verify and claim your Google Shopping account.