By Gladeana McMahon and Antoinette Oglethorpe   In this, the last in the series of articles on self-employment, we focus on your website and use of social media. We all know that sales and marketing is a key challenge for coaches setting up on their own. This sixth article in the series looks at how you can promote and market your services online Part six: Online promotion   This article, like our others, shares the online techniques we use to promote our own businesses and the reasons why we use them. Those techniques fall under three headings: website, blogging and social...