By now you’ve likely learned how to deploy Google Tag Manager across your website and set up your basic pageview tracking tag to push your data into your Google Analytics Account.
The next step is to start creating event tracking tags to measure user interactions across your website. An event could be a form submission, a click on an outbound link or even a mobile user clicking on your phone number. I’ve outlined the steps below for setting up some basic events.
One important question you need to ask before you get started is if your event is preceded by a number of sequential steps. If the answer is yes, you will want to build this goal directly into Google Analytics as visualizing the goal funnel is not possible at this time with event tracking in Google Tag Manager. An example would be a check-out or registration process.
Jumping back into Google Tag Manager (GTM), be sure your default variables are activated. You can do this by clicking the Variables link in the left column, select "Configure" and checking all boxes so they appear blue.