SHOP COMPONENT VIEWS
In order to create the Shop views as seen in the demo you will need to first create a menu link to your store based on the cart that you are using.
Virtuemart Home Page Layout
From your main menu select the Virtuemart Home Page and configure the Virtuemart Home Page to show 4 columns in the Virtuemart Configuration.
J2 Store Home Page Layout
From your main menu select Articles / J2 Store view and set the blog layout to 4 columns.