VOTING - Please can someone explain it to me!

I have votes on my story, and I see votes on other stories, but I can't find the option to actually vote, and I don't know what the voting is for. Can anyone tell me what its for and how to do it?

its just under the stats box on the the side, and i think its hustvto rate how well you think the story is, i think

if you're on mobile its all the way at the bottom...

@chipmunkcalling
@We are young and we are strong

Thanks guys

Look under stats, and you will see these stars. It's a rate and vote thing. Hope this helped. ;)