>1. How did you prepare yourself?

You got PR just like that, with no preparation?

>2. What is the job market like? I am in the 20s and a secretariat, I am honestly afraid on not able to find a job; white collar.

You got a job without knowing the job market?

>3. What are the advantages as a born raised Malaysian in Australia? I am a trilingual but couldn't write and read chinese.

No advantage, you need to adapt. To their culture, and their accent.

>4. How did you adapt to the society and culture? Though I am married to one but I am not sure if my SO defines every Australian.

You are either adaptable, or you are not. People who migrate and can't adapt have been known to move back.

>5. I understand that the cost of living in Australia is proportional to the wages, but how is living standard compared to a RM45k - RM51k annual earner in Malaysia?

No direct comparison.

You are migrating, and yet you are asking such basic questions?