The community is a shared space to engage with others during and after the conference. There are a number of things that you can do. You can use the space to share something about yourself and have a general discussion; find others with similar interests.
Add your comment to the box 'start a topic' and search the discussion board using the 'search' button. You can contribute freely. You can subscribe to the discussion board to receive any notifications when others post messages or posts a reply to your question.