EasyStore is your go-to Joomla eCommerce extension, that will enable you to build your online store from scratch and equip it with everything needed for a lively online presence. It's packed with impressive and robust features like easy product creation, efficient inventory management, the freedom to choose your preferred payment and shipping methods, and more. You can also customize your storefront's pages with the dedicated SP Page Builder addons. 

To access EasyStore from the backend go to Components from the dashboard and choose EasyStore. 

You can also access this template's Storefront and Single Product page from your dashboard’s Component > SP Page Builder Pro > EasyStore. This will take you to the backend editor of the Storefront and you can start editing your Storefront page. Also, to access the Single Product page, choose the Side Topbar (Hamburger Menu) and expand the EasyStore tab. From here you can choose this template's Single Product page and start editing it.

Check the EasyStore documentation for more info and the installation process.