How to set up goals in Google Analytics
In GA go to Admin. Select Goals\Create New Goals\
In the next page:
Goal setup: Choose “Custom”
Goal Description: name your goal (e.g. for my example, I call it “FreeBook”, set Goal type “Event”).
Goal Details: Category is equal to “FreeBook” (you may have other categories of events that you like to keep track. In that case you can name the categories here)
You can give the event a dollar value if you want (based on your knowledge of on average how much $ each event brings)
To check event tracking result: Go to BEHAVIOR section of the GA, click on Events, you can view Top Events\Pages etc.
That is it!