Department of Environment and Conservation in NSW has some great brochures that are online http://www.resource.nsw.gov.au/easyguides.htm
The Gould League have some great models of compost and wormfarms: http://www.gould.edu.au/shop/categories.asp?cID=13 ....
Sustainability Education Officer
T: 9399 0898
F: 9399 0903