By default, Drupal has two interfaces we can work with. The first is what any visitor to our site will see, consisting of content and blocks displayed in various regions on the page. This is often referred to as the anonymous user's view:

The second interface, known as the administrator interface, requires us to be logged in to a Drupal instance. We can log in by clicking on the login link or by navigating to /user/login and entering the user credentials that were created when Drupal was first installed:

Once logged in we are considered to be authenticated and, since we are logged in as User one, which is the Super User, we are also considered to be an administrator and are presented with an Admin toolbar.

The Admin toolbar itself is separated into three different functional areas: Manage, Shortcuts, and admin. Each of these sections organize...