The only 5 rules you need to know about social media marketing

Talk like a human not a used car salesman (i.e. LISTEN and respond).
Trends are cool, thoughtful planning is better.
If you wouldn’t read something your audience probably wouldn’t either. So, don’t link to crap, don’t use just any picture, and don’t be lazy.
Check your grammar and spelling. Twice.
The rules of improv apply. When in doubt, add value.