What uni are you at? If its anything like ANU there will be some pretty awesome accommodation arrangements, if you are an undergrad that is, postgrads??? We get shafted like you wouldn't believe (once the APGA scholarship is gone we aren't even recognized as students any more and are eligible for NOTHING), but here at ANU at least they guarantee every undergrad from interstate or international accommodation, they will even put you up in a hotel and pay the difference in rent for you if they don't have uni accommodation for you. Get every cent you can out of centrelink, I can tell you from experience paying taxes for years won't get you any help out of those scum, so you may as well get what you can out of them while you can because they will sure as hell wring every cent out of you they can once you start work. They will give a fair bit to undergrads, ausstudy, rental assistance etc. Go to your UNI, find the accommodation people and see what they can do for you, then go to student advisors, counselors, anyone, and get everything you can. Here its free, all that kind of assistance, the lot of it, I would be surprised if it isn't at your UNI too. There are resources available if you hunt for them.
Also look for scholarships. Don't not apply for them thinking you wont get them, forget that, apply for everything. You would be astonished at how many scholarships go begging for takers simply because most people don't know they exist, do web searches through the UNI website and you should be able to find them. Many of them might only be a few thousand, hardly anything when you have to house yourself for a few years, but they are there and available, and if you get a few of them it can tide you over. Hang in there, look for the services available and use them.