Once you have understood the difference between the Marketing and Transactional emails uses inside Automation Campaign, then you can follow these tutorial:
How to setup and use Marketing and Transactional emails:
1.Go to Automation Campaign from left menu.
2.Select New Campaign, fill the initial entries.
3.Click on “Launch Email Builder.”
Here you can create the new campaign of your choice and can send the type of campaign accordingly.
To schedule, a Campaign for next event, select “Action” and then choose “Send Email.”
A new pop-up box will appear, here fill all the entries, and you can select the respective “Email Type” such as “Marketing or Transactional Email”.
4.Click on “Add” button.