About Publishing
Publishing your storefront creates your Online Store and moves it to the Internet. The Publishing page lets you view changes made to your store since the last update, preview the store before publishing, and publish (or update) the storefront.
There are two kinds of publishing: publishing your storefront for the first time and updating your storefront. The process for both is the same, just click Start Publish. Before publishing, you can preview the site by clicking Preview Site.
Remember, it may take from 24-48 hours for your published store to start appearing on the Internet. This is because it takes time for your Web site (Online Store) to spread throughout the various Web servers that make up the backbone of the Internet (we call this Domain Name Server propagation; meaning, it takes time for your site to spread from server to server).