The best way to earn money here without much effort is to curate - you can upvote posts that you think are good and receive a share of the final value once the voting period (7days) has ended. You get a greater share of the rewards by voting within the first 30 minutes that a post has been made.
Other than that, you can create original content that others can upvote and make money that way.
RE: how steemit works???