Welcome to SteemIt.

The platform rewards posts with the crypto currency STEEM.

The rewards come from interest on the STEEM that people hold in their wallet.

The formula for the upvotes is as follows: Each upvote uses 2% of one's power. The power regenerates at 20% a day. This means that users get 10 upvotes a day.

SteemIt users tend to upvote on a daily cycle.

Most users will only upvote a given author once a day.

Since there is a daily cycle, it is best to write only one root post a day.

I see that you wrote three posts with only a few minutes between posts.

This decreases the likelihood that people will upvote your post.

It is best for new authors to write just a single post a day.

Good luck on SteemIt.