Adding "like this article, share it"

Hello folks, I’m pretty new to this. I’ve been trying to find an add-on or something to put on my blog articles for easy re-posting. I did come across one on someone’s website but it just looked a bit shotty. Basically looking for something to put at the end of a post or article where it has the HTML code in the box and all the person needs to do is copy and paste it to pass it on… Any help would be great.

Thanks, Matt