Use the guidelines on this page to create your own Drupal videocast: https://drupal.org/node/62196

Download and install Drupal 7 or 8. Choose any topic from the The Drupal Cookbook (for beginners): https://drupal.org/documentation/customization/tutorials/beginners-cookbook  to do your videocast on. Review how the process was for you and create a 3 minute video/screencast describing the steps you took and your overall feedback. Post your video on Drupal.org.