Its really very simple.
Fly (or swim) to Australia
Find a third party willing to store your Bullion safely
Make arrangements to have the Bullion insured & stored
Go to the Reserve Bank of Australia
Buy your Bullion (remember to request an assay certificate)
Arrange for transport
Verify receipt of Bullion at point of storage (get receipt)
Go home.
Anything else?
Oh I forgot something. On the way home, call yourself an idiot several times for buying Gold Bullion at close to 20 year highs.....
or
Call yourself a motorized dildo with legs, for not remembering that you could have simply bought gold coins and stored them in a safe deposit box in your local bank....
Good luck
Steve