I haven't done it yet, so can't give qualified advice until I have but my strategies in preparing for it have been:

Hiring a Doula (IMO, the most important thing)
Completing an independent birth class (in my case it was Rhea Dempsey's Embracing the Intensity class, also in Melbourne)
Reading widely, including Juju Sundin's Birth Skills, and Gentle Birth, Gentle Mothering - both of which I would recommend
Hiring a TENS Machine
Preparing a labour "toolkit" with heat bags, massage oils, stress balls, etc


Hope that helps. Also, remind yourself that you CAN do it, because plenty of people doubt the birth process and will offer "advice" about accepting the drugs and suggest that you can't do it drug-free. This is bollocks (again, I haven't done it yet, but I am confident that labour and birth can happen without the drugs because, well, plenty of women have done it before). My Mum did it 4 times. And what's more, the question should not be "why would you do it without drugs?" It should be "Why would you take the drugs?" because those drugs and interventions come with their own set of consequences for you and baby that everyone should consider before they accept them during labour and birth.

GL!