NPR has a good article about the "So" thing: http://www.npr.org/2015/09/03/432732859/so-whats-the-big-deal-with-starting-a-sentence-with-so http://www.npr.org/2

NPR has a good article about the "So" thing: http://www.npr.org/2015/09/03/432732859/so-whats-the-big-deal-with-starting-a-sentence-with-so http://www.npr.org/2015/09/03/432732859/so-whats-the-big-dea...