To earn coins you just start to participate in the bounty companies, even now it is quite possible to get a little money on it!
well, participating in various Campaign programs might be able to produce or various Prizes.
or it can be in other ways, trade or invest and there are still many other ways that can produce.
if you have an obligation to produce there will definitely be a way to do the activity.
so you must be eager to participate in various activities, it will allow you to produce more opportunities.