@resteemable will resteem any post for new people (like you) to help them get more people to see your post. All you need to do is to go up to the URL and replace the https:// with the letters re and then send it.

If you do it right you will get a screen that comes up asking if you would like to make a donation, but since you are new they don't expect you to donate anything because you are the one they are trying to help.

When you get bigger though, you will want to help them out by upvoting them, donating, or just tell others about their service. I did it for you so that you know how it works. (And i knew you'd ask me because you are nice and curious) ;)

So try it out on another post and see if you can do it and if you have any problems, just let me know.

ps... don't upvote them on your link because you need to recharge your voting power, but you can leave them a comment thanking them for helping you.