if you planning to study in Austrlia, first you need to do is apply a bank account
then tell your family all your BSB number and account number so that they can use the details to transfer the money to your account
but I think 定期過錢 is not a good idea
as you know the bank will charge you $100~$150 HKD on every transation (I think that is expensive)
so what I suggest is ask your family to give you may be $5000 ~$10000 AUD for a period half to 1year
this action can save the transation cost and also you can earn the interest (5.5%~6% per annual)
but the important thing is you must contorl yourself, have a good financial planning, dont go to casino, and set up a amount how much you can spend on every month, otherwise.....good luck