If you have been on the outside looking in or are new to social media, start with Facebook.1.5 Billion people access Facebook daily and 1 out of every 7 minutes spent on the internet is spent on Facebook. No other platform comes close to that. Twitter, Instagram, LinkedIn, Google+ all have value and can be added later. I recommend that you build (focus) your initial presence around Facebook.
From our very good friends over at business. com