To view a Product, you can go to Product List page by clicking on Products Tab in left menu and once you are on the Product List page, you can search for the right product and click 'Edit Product' from the action buttons. This will take you the View/Edit Product Page.
This page has three sections:
Product Details shows the details of the product selected. You can edit the details except SKU if you like to.
History shows the usage history of product in invoice from the time of product addition to system. Change Log shows all changes made to product till it was added to system.