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From my understanding, you might get paid either way.

Upvoting others posts will get you curation rewards and people upvoting your posts will get you author rewards!!

Both. Authors and curaters receive rewards. The more Steem you build by being active in the community, posting, chatting, honest votes, the more value your upvote will carry. There is a tutorial for new steemians.

Thx. Do you have the link for the tutorial?