What are the steps should be taken by me to get student visa . Please suggest ?

The first step is to prepare these materials: the application form, a recently-taken half-length color photo, copy of your passport, the admission notice from the school, and proof of your financial support.
The next step is to submit the application to the embassy of PRC to apply for the student entry permit, or post the application to HK immigration department to apply for it. Below is the postal address:
Receipt and Despatch Sub-unit
HK Immigration Department
2/F, Immigration Tower
7 Gloucester Road
Wan Chai, HK