The only way to have bitcoin is just by buying them, otherwise you will have to stay stucked on your pc for more than 12 hours a day in order to claim $0,02 worth of bitcoin everyday through faucets.
Since you are just newbie in rank, all you have to do is focus on promoting your rank first so you can participate in signature campaigns and while you're doing that, you can try social  media campaign where it only requires your facebook and twitter. Or you can do translation campaign from OP's language to Indonesian language.

You can do both at the same time.Bounty is a sure way to profit,It's rather a part time job you do advertising the project.Trading is a risky way to profit.

I use to trade in short term.If you have, at any point, the opportunity to cover your initial investment and still have enough crypto to play around with: don't hesitate and do it.

For me, it is the ethereum.I can say that it has potential just like the bitcoin.You should consider about all of the projects that tried to created the product based to change or related with our economic system.