Welcome!
To help first time contributors find their way around the project management systems we use in the Drupal community, some of our contribution mentors have made a selection of videos for you to watch.
Some of the videos are useful to everyone, from developers to designers to marketers. Others are aimed at particular groups, like developers, to show them how to install a copy of Drupal on their own computers and how to submit changes to the Drupal software itself.
You only need to watch the videos applicable to the types of work you are interested in and you can watch them at any time you like.