how do you become a teacher? which classes or things do you do to get that kind of career?

i am having difficulties trying to find a job and left college to focus on that. but since the job search isn't turning up anything im thinking of going back to college to maybe become a teacher. i love theater and film. i had a theater class and film class in high school and they were my favorite classes. theater taught me everything about what goes on on and off stage of a play and film class just added to my love for cinema. my parents say i should think of being a teacher or film or theater because i have all the knolege and its all i really talk about and not much else. and since im not one for politics and such i judge film and theater on its own merits that films and theater should be judged on.

problem is i dont know where to start. i dont know what classes i need to take or what to do to start. when it comes to job searches im running out of options and i really dont know what else to do. being at home all day makes me want to run up the walls.