G'day!
Fellow local Australian here
When come to considering the move to Australia, you will need to consider whatever visa suits you from the Department of Immigration (
Department of Immigration & Citizenship) and I have to mention, moving here is a bit tricky however you'll need to try your best, do you have any extended family living in Australia? (This will definitely help)
Sunny_signs has covered a handful, and btw, sunny_Signs - Sydney is only 3 hours north of where I am
Speaking of gumtree, there is other related job search websites as well like
Australian JobSearch - Australia's largest free online jobs board which I look after - part of my day job (however it is only applies to jobseekers with australian residency though)try seek.com.au as it is a good site.
The communications here are pretty much english - Australia is multi-cultural country, we welcome anyone of any kind. AUSLAN (Australian Sign Language) is pretty much similar to BSL, so it is easy to pick up onwards.\
Where are you looking at in moving to in Australia?
Hope the details above helps