Having access to an Australian postal address can be really useful in the first month whilst establishing yourself down under. Your Medicare, Tax File Number and Bank will all require an Australian address at the application stages. You have a few options. Possibly the easiest way to access an address is if you have relatives or friends living in Australia. You can then have documents sent to you knowing that they will be secure. Alternatively many hostels are used to dealing with travellers who have just arrived into the country. Ask your hostel if you can use their address before registering for any of your documents. Even better is to ask your hostel prior to arrival and that way you can be assured set up should be fairly simple.