Thank you, that did it. if you are new to prestashop and do not see add to car button, and want to see how your product will look on the internet:
1. From Preferences, click on maintenance and enable your store.
2.From Preferences, click on products and under catalog mode select No and save and you will be able to see your product with add to cart button after adding the product and click on preview.
And them remember to put it back on maintenance if you are still working on.
Thank you Paul.