Recently, I joined the jazz band at my high school. However, I have no idea how to play jazz. The band director said that I don't need to know anything about jazz to join and that they would show me. However, I thought it would be a good idea to get some basic knowledge so that my learning from them would be that much easier. I'm currently playing in the school's symphony orchestra and I have a pretty okay grasp on music theory. Can anybody help me out?