Coding Help – After Registration

Hello! I have something I really need to put on my site and I would love the help. What I really want is to have users register with basic information like name, age, gender, email, and password. Then I want them to go to their email to confirm the account, and then, once they return to the site and successfully log in, I want them to be forced to do this “quiz” which will determine their personality. It will then go on their profile. I am struggling with this and cannot figure out how to do this. Also, how will I get one of the fields that they originally registered to have on their profile page?

Thank you!!!