http://www.socialmediaexaminer.com/how-to-use-facebook-login-on-your-website/
How to change FB vanity URL
http://www.robak.co/change-facebook-page-url-2016/
How to add a new admin to your FB page
https://www.facebook.com/business/help/187316341316631
How to change your FB page category
https://www.facebook.com/help/222732947737668?helpref=faq_content