I know of several other people in the party who are from the ages of 17-19, including myself and another person in my city. The party isn't about age, it's about struggle. If you are prepared to commit to building a revolutionary socialist party and to fight for the working class, you have the capacity to join. I would definitely get in touch with your nearest branch and they can talk to you about what party membership entails. No time is too soon to join.