Click the Preview icon in the top toolbar to see how your site will look when published. In Preview mode, you'll see a black toolbar with device icons; these allow you to see how the site will look on a phone, tablet, or desktop computer.
Click the Publish button in the upper-right to make your new site--or any updates you make to your existing site--viewable to others.
Click the small down arrow next to the Publish button to unpublish the site or change the site URL. (You can only change the bold part at the end: https://sites.google.com/appstate.edu/samplesite.)
Click the share icon to manage who can view and edit the site.
You can share editing access with specific individuals by adding their email addresses.
If you do not want the site to be public on the web, you can limit view access to specific individuals or to anyone at Appalachian State University.