Not everybody creates a facebook fan page. If you have a personal blog, then you can use a Facebook profile to allow users to follow you.
Firstly you need to allow people follow you. The pictures below show how to do it:
The window above also generates the code which you can paste into your website to get the follow me widget. The iframe code is mostly used on websites, however if you need a different code type you need to generate the code through the facebook developers application here: https://developers.facebook.com/docs/plugins/follow-button
The pictures below show how to do it:
How to paste the code to your WordPress? You can just paste it in your templates or a widget.