Hi Wil and welcome.
As paulbunyn said, there are a few Aussies floating through this part of the net.
There used to be a pretty active harmonica club in Newcastle, but I haven’t heard anything from them in a while. But there is no shortage of both free and paid instructional/feedback sites for harmonica on the web (including this one – make sure you have a good look around this site). I still like personal instruction from a good teacher, but such folk are a bit hard to come by around Canberra.
Despite that, I’m going to a workshop here next month put on by DJ Gosper (a Canberra local) and Big Blind Ray (from Sydney) and then the next weekend I’m off to Sydney for a Howard Levy concert (Sat night) and workshop (Sun). Given Howard “is acknowledged as the world’s most advanced harmonica player! He is also a superb pianist, innovative composer, recording artist, bandleader, teacher and producer. Winner of 2 Grammy Awards!” it should be pretty good. Not sure if it is for beginners though. (see http://www.kurtjacob.com.au/