Join a climate group
Join Climate Action Moreland: https://climateactionmoreland.org/ or another climate group.
By joining a group, you can help to lobby decision-makers, and to educate others in your community.
Check out Environment Victoria http://environmentvictoria.org.au/content/join-climate-action-group for a list of groups range of groups involved in climate action. Also check out Climate Action Network Australia (CANA): http://cana.net.au
Check out ideas on building sustainable communities: http://www.sustainablecommunities.vic.gov.au/