Measurement marketing is like a river. You do not know where any individual fish are. But, you do know where the majority of the fish will end up (downriver). You can adjust the currents by using rocks (aka content) to get a greater percentage of fish into your net (Customers).
Blogs. It seems like everyone has one but only a few people know why. Here I am going to walk you through answering the question of “is our blog working”.
Your Analytics dashboard should answer the questions you are asking at a glance. Then give you an action to take based on that data. As you progress you should drill down one level deeper to see why those numbers exist.