Many users of WordPress definitely have experienced problems with adding the Facebook follower to their WordPress page. So there is a small instruction on how to do it. At first, you have to create a Facebook.com page. Then follow this link: https://developers.facebook.com/docs/plugins/page-plugin where you can create your own widget.
Fill up all everything you have to as you can see in the picture. Enter your facebook.com URL, width of the widget, color and if you want the news and the follower to show on your page.