I was reading an article this morning about setting and realizing social media goals. There were four keys listed, all or which are important steps. The third step explains why it is important to know where your web traffic comes from. When you know where your traffic is coming from you better use the time you spend on your social media. It is one of the best uses of Google Analytics reporting.
To do see where your social media traffic is coming from in Google Analytics, assuming you have logged into your Google Analytics account, go to the Acquisition section, then Social section, select Network Referrals.
On the Network Referrals page you will be able to see a list of social media networks websites sending traffic back to your site.
By clicking on our example you can see that YouTube and Facebook are the main social media sites that drive traffic.