Now what should i do as a newbie and howto get bitcoin BTC ?
Welcome to the bitcoin, you can start with buying the bitcoin now if you have funds, if you're not have it i suggest you can go with join the airdrop / bounty but with your rank now it's hard to join them. But just patience for 1 month to reach jr.member rank then you can join with them.
As newbie you have to master first all the technical analysis or cryptocurrency terms. Do some massive research. Study how to analyze the market price becuase it is the most important once you invest bitcoin and you do trading. By joining this forum , it has a big help to us by giving us knowledge about cryptocurrency.