I will also say schooling is incredibly important.
However, I would suggest getting as much experience as possible. Audition and be involved in as many productions as you can to build skills and experience. Don't get discouraged if you don't get cast in everything! Take every production as a lesson and continue to build your resume and skills!!
Take as many classes as you possibly can (acting, dancing, singing, lighting, sewing, etc.), once the class is over, don't let that be the end of your education! Keep your skills sharp and fresh!!!
Break a leg!!!
Watch out or scams. you should NOT pay to have an agent represent you.
The first thing I would do is to be start with acting classes! Check www.candinewscamps.com/private classes
In this class you have a mentor and guide to help you navigate your acting career!
Candice recommends the following next steps: