um.........studying or travel ( agent or yourself )?
if u are going to travel in au,i think most of the things ( visa ) will be done by travel agent. if not, then you have to apply e-visa though the air-ticket company, or you might go to Australian Consulate .
( studying in au )
Then , firstly, you have to apply the application to your college, then your college will give you the doc. ( application , other doc ) . of cos, you have to pay your school fees la......then you have to go to do the X- lay , body check in offical doctor. then you have to go to Australian Consulate ( Visa deparment )
For more information about Australian Consulate .
Please visit their website :
http://www.hongkong.china.embassy.gov.au/
their address : Address: 23/F Harbour Centre, 25 Harbour Road, Wanchai, Hong Kong - Tel: +852 2827 8881 - Fax: +852 2585 4457