By sharing your original and unique posts that people want to upvote and providing value to others and the community. You can also earn rewards by curating - upvoting content that later becomes popular (although Steem Power is necessary to make money this way). Additionally, you can earn money simply by holding Steem Dollars. Currently, it is 10% APR, but the APR can change.
it's too early to tell if we are going to be millionaires using this system, but it's good fun all the same
Of course thats really good fun (Y)
i got told once that it's fun to earn money...... just can't remember who told me that