Drupal from Scratch provides a comprehensive guide to installing Drupal on a Debian-based system using command lines. The document outlines how to install Drupal Core, set up a MySQL database, configure a virtual host for local development, and complete the first Drupal site installation. Key steps include downloading and extracting Drupal Core, installing prerequisite software like PHP and Apache, creating a database, enabling virtual hosts, and navigating the Drupal installation process.