No matter what age you are, there are many local community theaters that look to the community to act in their plays. You may audition and start out with minor roles and work up to lead roles as you become more seasoned. If you have yet to graduate high school, you can take part in your drama club, audition for school plays, join a debate team, or take public speaking. This can help you gain confidence in performing in front of an audience. Acting skills can take numerous years of training and many start at an early age to develop these skills.