A facebook page has the potential to earn as much as a billion. The Indian startup Inshort was first started as a facebook page which later became a startup for sharing any news article in 60 words.
To earn money from a facebook fan page, first you must create one. And then follow this small guide.
Start sharing content. Your content should be such that people read/watch and share. Facebook pages are said to have a low organic reach and people often forget you if you are not consistent.
You must have a pre-written pool of content. Also, you should schedule your posts so that if you are busy somewhere, your page will still keep running. You can schedule your social media posts with apps like Buffer and HootSuite.
You can also earn money becoming an influencer with your normal profile. If posts on your facebook wall get decent likes and comments, becoming an influencer is a good way to earn money.
Also if you have a fan following and you interact with them through your personal profile, then you can make money by signing up through an influencer account on blogmint.com or fromote.com to start earning.
After signing up, you will be required to fill a form where you will enter your profile information and you can fix price as an influencer. For example, you may charge 5,000 per facebook post giving emphasis to a brand.