This page will eventually include information and/or a form for visitors to sign up to become community members and have access to the community forum. It will also include information on how to contact us and include any feedback as to what they'd like to hear more of. It will also probably be further sectioned with child pages/drop down menus with more specific titles: contact us and community forum.
The page title, heading, and URL for this site are good choices because they are all consistent. The words "Get Involved" are specific enough that visitors will know the general type of information they can find on the page. It is still, however, encompassing enough to include information like joining the forum or contacting us/giving feedback.