You can view and edit all products you have added whether they are active or in draft mode. Simply log into your dashboard and on the left hand side you will see a gray column with several options. Click on Products. This will bring you to your products page where you can view and edit all products. Once you find the product you would like to edit make sure to toggle over the product. Edit will then appear. Click on this option and you will be brought into the product to edit or add any information. Just make sure that you scroll to the bottom of the specific product page and click on "update product" to save all updates/edits you made.
Here is a great article on how to get your products more visibility: