Great source of information on the ExplorOz website. Below is just a few of the topics covered. It is probably the most comprehensive sight for 4 WD exploration of Australia. http://www.exploroz.com.au/
4WD Driving Skills & Rules
4WD Treks
Buying a 4WD
Driver Training
Hiring a 4WD or Campervan
Making Your Itinerary
4WD Treks How to Plan a Trip
Directory - Clubs Recovery Gear Needs
Directory - Driver Training Spare Parts and Tools
Directory - Vehicles Staying in Touch when Travelling
Driver Training Trader - Vehicles