There are so many web sites that provide basic information, policies, news, concepts, useful actions. Here are just a few:
Useful Australian sites:
The Department of Climate Change and Energy Efficiency
The Clean Energy Regulator (National Greenhouse and Energy Reporting (NGER)
The Department of Agriculture, Fisheries and Forestry
Pacific Climate Change Science
The Department of Environment and Conservation (WA)
The Department of Sustainability and Environment (Vic)
The Department of Primary Industries (NSW)
The Department of Environment and Heritage Protection (Qld)
The Government of South Australia
How to save power in your home (NSW Government)
Renewable energy (Australian Government)
Useful International Sites:
Federal Environment Ministry (Germany)
Centre for Climate and Energy Solutions (USA)