The core Drupal installation is a blank slate. Although the core installation contains the potential to become a powerful and flexible learning tool, much of this functionality needs to be enabled and configured. However, before we begin extending the features and functionality of your site, we will look at the functionality of the core Drupal installation and how the administrative sections are organized. The core installation provides the foundation on which we will build your site.
The default navigation menu seen in the preceding screenshot shows the options available in the core Drupal installation. In this explanation, we will break them down into core user functionality and administrative functionality.