Are you looking for a way to learn about the most powerful open source ecommerce solution ever built? Yes EVER. :) Do you want clear steps on how to build your first ecommerce store with Drupal Commerce?
There are several ways to sell access to content on your Drupal site. One of the ways that hasn't been discussed much in Drupal tutorials is selling access to private Organic Groups with Drupal Commerce.
The ability to communicate with your customers is essential when having an online store. One of the ways to do that is to send them valuable information through an email campaign.