Until now, the money I earned was not so much. because besides I'm still a newbie, I also still need to learn a lot about this crypto world.
if calculated, maybe about $ 15K I already get.
If you class $15k as 'not so much', especially as a newbie, then you are setting your sights very high. Wish you all the best in sustaining that kind of return, because it sounds like you have the rest of us beat already. As a sideline it is relatively easy to earn a couple of hundred dollars a month I guess, I don't even get that, but it will depend on which direction the coins go once they hit the markets. I like taking part in bounties, but definitely couldn't make a living from doing so.