Links to some free GIS resources…
DELWP Spatial Datamart (Victoria)
The Department of Environment, Land, Water and Planning (DELWP) provides an extensive range of FREE spatial data including: climate change, environment, energy, forests and reserves, Forest Fire Management Victoria, heritage, planning, land registration, marine and coasts, wildlife, water and catchments and Vicmap data.
CSIRO Data Access Portal
Australian government open data
Interactive GIS websites
NationalMap is an online map-based tool to allow easy access to spatial data from Australian government agencies.