Drupal is a CMS to build website.
For absolute beginners, the existing documentation can seem overwhelming.
This presentation demonstrates Drupal based on 3 websites.
The first website uses Drupal in a very simple, standard way. It is used to explain the concepts behind users, nodes and blocks.
The second website adds ckk & views and illustrates how to build a photo album with these modules.
The third website uses only custom content types combining different views with the pages module. It also uses 100% custom CSS, deviating from the "boxy" look of most drupal sites.
The goal of the presentation is to give an insight in how Drupal works and what it can do for you in 20 minutes.