D8 Commerce – No "Add To Cart" Button for Product?

Not really too sure what is going on here, but my products do not have an “Add To Cart” button, even though it is configured as the variations field “Add To Cart Form” in manage display. It says that it exists, but it just simply does not display.

Additionally, are there any good A-Z tutorials on creating an ecommerce system using commerce? An actual walk through on how to setup your store, products, cart, checkout — start to finish?

Drupal version: 

Source: https://www.drupal.org/taxonomy/term/22/feed