1st Campaign CONFUSED about sequence

strong text I’m still confused! A newbie. There is a learning curve.

I’m running my first campaign for a course that is linked to Eventbrite. I have 2 lists one new and one old.
Both lists have been getting emails for the course and both lists will be caught up with each other by Friday. I’ll send out another email to the combined list but then I get confused. If a person clicks on Eventbrite it shows up as a goal but I will have to manually add that person to a new list? Then send a follow-up email about the course? What about the people that do not sign-up should I make other goals for them? Ultimately I want to have people sign up for this course and if they don’t stay in touch. Any ideas that are simple would be appreciated.