In the column Actions you can find 4 actions for every product in the list.
This button will open the Front-end page of the product in a new tab.
This button will open a widget with the default OpenCart page of the product. There you can quickly make changes to the product, just don't forget to click the Save button in the top right corner of the widget after you are done.
This button redirect you to the default OpenCart page of the product.
This button will open a widget showing all of the orders made for this product.