Useful lINKs:

Queensland
The Supreme Court of Queensland
The State of Queensland (Department of Environment and Resource Management)
Office of State Revenue (Qld)

New South Wales
The Supreme Court of New South Wales
The State of New South Wales (Land and Property Information)
Office of State Revenue (NSW)

Other
Australasian Legal Information Institute (AustLII)
Australian Securities and Investments Commission (ASIC)