pooh-bah, have fun first and foremost!!!
I just started completing last year, and was amazed at how in the first stage I had fired off rounds w/o even looking at the sights. You get caught up in the timing thing and excitement. Remember: you can not miss fast enough. First comes hits, then speed. Going fast first will just get you alot of friendly hits and overall slow time. Smooth is the most important, speed comes last. You'll be amazed at how calm and smooth that fastest shooters will look.
Also, carefully watch others shoot. Don't be bashful about walking around the stage before you shoot. If there is movement, plan exactly where your feet will end up, then you can run through the stage in a much more organized manner.
I'm lucky at the local club and an experienced shooter who was very willing to help me with tips was in my squad. He said he'll continue to help me until I catch up to him in times..... lol
Get there early, lock on to someone with experience, and listen. You're going to have a blast!! In my experience it is an amazingly friendly sport on the local level and newbies are welcomed.