There are a number of defensive and other courses available for young drivers, but anyone who is insured with AAMI, or whose parents or grandparents are insured with AAMI can undertake the AAMI Skilled Driver Course free of charge.
The course runs for about 6 hours and is made up of theory, and practice out on a test track. It covers many hazards and risk management, and backs this up with evidence and compelling anecdotes.
More information about the course is available here.
RACV and Allianz Insurance also offer access to these kind of courses. It might be worth checking whether your insurance company has one. Also enquire about costs because not all of them are free.