Check your version
This tutorial covers a topic in Drupal 7 which may or may not be the version you're using. We're keeping this tutorial online as a courtesy to users of Drupal 7, but we consider it archived.
Alternate resources
Sprout Video
In this series we will walk through the process of building a basic Drupal 7 site. We start with installation and cover all of the major pieces of site building, including content, menus, blocks, users, and adding modules and themes. Along the way we'll define all of the common Drupal terminology and at the end you will have your first Drupal site, as well as the basic building blocks to build many more sites. This video gives an overview of the series.
Next
Installing Drupal 7