Everyone has heard about the "Cambridge Analytica data scandal" by now. Is "Facebook marketing over" or "nothing will change"? Most "experts", preaching either extreme are dead wrong. The sum of Facebook changes is the biggest in years and you need a plan to adapt.
If you buy Facebook Ads, without taking full advantage of Facebook Analytics, stop what you are doing and read "Facebook Analytics: Monetize the Customer Journey" in the latest FeedFront Magazine.