Joomla! is built by a community of volunteers around the world. They're known as Joomlers!
From coding and testing, to documentation and translation, right through to marketing and management, Joomla has many ways you can get involved in helping with the project.
Patrick Jackson is team leader of the Joomla Volunteer Engagement Team, and in this session he will be outlining many ways you can become a Joomler, whether you have an hour spare every so often, or are looking at having several hours a week available to participate.