How to Use Facebook Audience Insights: A Beginner's Guide blog.hubspot.com/marketing/facebook-audience-insights-guide?utm_content=buffer3e6ef&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer Facebook Audience Insights is one of the most powerful analytical tools at your disposal -- that is, if you know how to use it. Accessed through Facebook Ads Manager, Audience Insights is free to use and provides a huge amount of demographic and behavioural data about your audience and that of your competitors.