Review the program http://drupalladder.org/ this contains (or links to) lessons and materials to help people learn about and contribute to Drupal. The site was created by theBoston Initiative to help Drupal user groups develop and share and develop materials for learn sprints and issue sprints.
https://groups.drupal.org/drupal-ladder
https://drupalize.me/videos/overview-learn-drupal-ladder?p=1176
https://drupalize.me/guides/drupal-community-tools-and-core-mentoring