Very simple process. You just have to join NAR, get yerself an H motor (I reccomend the H165-MR for certs. very good motor. I have used one myself, with great results), print out the application (there is one on the NAR website.
NAR Website ), fill it out (this is easy. Just sign a few lines, and read it. easy as pi.), bring it to a launch and fly. Also look on the
Aerotech Website for info on motors. You will most likely be using a reload, so it makes sense to buy an AT 24MM case and use it for some Es and Fs first just for practice assembling loads. also find the guy with the purtyiest rockets that look about 2-5 feet tall, and ask him for help assembling your reload. If he has rockets that big (2" diameter to wicked big) he will most likely know how to assemble the load and will gladly help you. If you were going to a CMASS launch I could help, but I dont think you are in New Eingland. Let me know if you are, though. Either I could help you or I could reccomend a few people who would be more than happy to help. Pick your rocket carefully. A nice heavy rocket is nice for certs so you get a low and slow flight. I would reccomend the MSH 4" V2, PML Hydra, matrix, or pterydactly JR., or the Skunkworks Spike. These are all very nice rockets. If you have a lot of time you could wait untill I come out with my first kit (it will be a few months. a nice 2" diameter glassed rocket.). Good luck!