If you're posting on social media you shouldn't be selling but you can be helping.
So Content Marketing is the name for the helpful resources on your website to which you can point from your social media. These are nearly always educational and sometimes entertaining (hence the word edutainment) and take many forms from a pdf to a podcast, from a white paper to a webcast, from a video to a very handy "How to" piece of advice - often within a Blog (like mine)
Of course, all of this fresh content is also looked upon most favourably by Google in terms of demonstrating your authority; enabling those links from other websites and those links & likes from social media; as well as showing that you're on the case in terms of current thinking. These things combined helps your website to be found more easily in terms of search engine optimisation (SEO).
How can I help? From coming up with a cunning plan in terms of your approach to Content Marketing to actually helping you create the resource(s). One popular service is the regular generation of marketing ideas for blog posts and either writing or editing these where required.
Please get in touch if you are in or around Hampshire and think some help in the area of Content Marketing would be useful to you.