How resteem does work and what is my benefit in it?

i have seen many posts and authors saying to resteem their posts and resteeming others posts. But after searching over the net i am not clear yet about it.
At
https://steemit.com/steem-help/@stealthtrader/what-is-resteem-and-how-does-it-work
i saw comment by @neoxian saying that
"If you resteem something, it will show up in your blog feed. Those who are following you will see that post."
and i understood that this is like sharing something like on facebook.

But i am not clear yet what does that give to a person steeming it.

@helpbot do you know something?