I'd probably advise that you start looking at makeovermonday and building some vizzes and getting some views on your tableau public profile. Look at other people's work online to get some ideas;
If you're able to show your tableau public to wherever you're interviewing then that can be very effective.
Welcome to tableau community.
When you go to any interview, they will ask real time experience.
If you learned tableau then start help people in tableau community and get some idea about real time issues.
This is the place where you can learn more.