Experienced developers, and new site builders alike can remember a time when installing a module meant visiting it's project page on drupal.org, downloading and unpacking it and dropping it in the correct directory. That process can be quite tedious every time there's an update if your site has dozens of modules. Thank goodness for drush. While drush's utility certainly isn't limited to helping download modules for your site in an efficient manner, it's an absolutely invaluable tool for anyone working with Drupal sites on a regular basis. We're happy to present a new series, Introduction to Drush, with the first video, What is Drush?, released today.