All of the advice in this article is sound, but to be honest and in my humble opinion, the most valuable point made here or in general concerning social media and security is the absolute need for two-factor / multi-factor authentication.  This must become a component of everything we do online.

https://nakedsecurity.sophos.com/2018/02/06/safer-internet-day-3-things-your-social-networks-can-do-for-you/