Amateur Radio is a fun, technical hobby for all ages.
Exams are managed by the Australian Maritime College: http://www.amc.edu.au/industry/amateur-radio
The AMC exam fee schedule may be downloaded here:
Training courses are offered by your local amateur radio club, or on line at: http://www.res.net.au/
If you are in Perth, Ham College has been providing training since 2007 – they are on line at: http://hamcollege.com.au/wordpress/