using social media to promote your online business

So I took a class last night titled, Using Social Media to Promote your Online Business.  I have not done the required home work yet, but I will work on it this coming week.  Part 2 of the class is next week.  I hope these classes pay off  in the long run.  The hasn't been much traffic to my etsy shop in a few weeks.  I'm keeping my fingers crossed.