[Denise Bohnsack]

All above are excellent suggestions. Main thing is to find your niche. Can you recruit new members? Organize activities? Take pictures and videos of the process? Help with fundraising? Help with spirit activities, tshirt design, marketing? Building the robot is important in FIRST, but so are all the other activities which go along with it. EVERYBODY can contribute in one form or another and grow from there.
Best suggestion is to talk to your teachers and mentors. Also watch and learn from the ones who have been on the team a while. Maybe most importantly, have fun! Good luck!