just keep posting then you can earn?
Sorry but not much time to read their FAQ
Steemit is about posting blog posts or commments. When people upvote them you get a certain amount of cryptocurrency from their upvote. It depends on how much steempower they have then they upvote you and how much voting power they have.
Someone with 10,000 steempower(worth about 15,000 USD) can upvote you with 100% voting power and you would get about $2.20 or so. Depends on how much the price of Steem is worth too for how much you get.
When you are brand new you have barely anything so your upvotes are either a penny or two.
Post good content and keep at it and people will upvote you.