If you're in college join the school radio station. Intern anywhere. If you're a tech geek look for small productions needing tech help. Failing any of the above it's always wise to Register with linkedin.com and join the "film TV professionals group"
you have to build up your resume so its good to take classes and audition for whatever is out there you can do it. because i want to be an actor too and I signed up for drama class for ninth grade. so I believe in you baby!!!