This is a great tip from the people at Zapier

You simply connect your blog using Zapier to your social media accounts and every time you post to your blog, Zapier posts it right to your social media account, like FaceBook, LinkedIn…

Automate Your Social Feed

“Get a higher ROI on your work by connecting your RSS feeds to Buffer, Twitter, Instagram, and more to generate social media content without having to do anything else, as over 3,000 Zapier users are currently doing.”

Learn how – read more here

There are lots of tips in this article – you’ll need to scroll down a little way until you see the title. Good luck – it works great for me.