I agree with Jesse about the reading... start reading books about coaching, leading, etc. If you have a particular philosophy, style, etc that you want to model yourself after, its better to do that young than to walk in a room as a new coach not knowing anything specific about what you are trying to do.
A friend of mine just stayed in touch with his high school coach as a player and while he was in college (you will need to become a teacher to coach, which im sure you know) and that coach rewarded him with opportunity when he came looking for a job as a coach.
Network, go out and meet new coaches, go to coaching clinics, etc. Hell, it wouldnt hurt to email the coaches at TU, ORU, etc (they know the Tulsa area and know all the coaches) and get their advice. They were all just players at one point too, and they have tons of experience. If they don't answer, you just lost 5 minutes writing an email.