In a relatively short 20 years, the concept of selling goods and services on the Internet has gone from a novelty to the mainstay of business. If you are a business and don’t provide an online channel to sell to your target customers, you are missing out on a tremendous opportunity to increase revenue, market share, and profitability. Drupal Commerce provides a robust and full-featured solution for building online storefronts, and in this chapter I’ll walk you through the process of creating a commerce site. To demonstrate the ease of building a commerce site on Drupal, I’ll create a site that is focused on selling Drupal T-shirts, coffee cups, and hats. The concepts can be expanded on to sell any physical or virtual goods, so you are welcome to either follow along and build the Drupal commerce site or use the example presented as a guide to create your own commerce site.