This document provides an introduction and overview of using the Migrate module in Drupal to import and migrate content from various sources like CSV files, other Drupal sites, or other content management systems. It discusses the basic steps for creating a custom migration module including preparing the site, mapping fields, running migrations, and testing. Specific examples are provided for migrating content from a CSV file and from another Drupal site using the Migrate D2D module. Migrating content is presented as a useful technique for moving or upgrading content between different versions of Drupal.