A slow hit beats a fast miss so take your time, make your hits count and have fun.
You are probably going to start off in D class. As youshoot more, and win more, you will go up in class. You are only competing against other people in your class so don't worry about the guys with their $3000 guns and super slick holsters etc.
Shoot your first match and then try to beat yourself next time. Fewer misses, more A hits and let speed come on it's own.
I also recomment the Dillon loaders. I have a 55 for all my large primer loading and a 650 for my .38s which I load from 2 - 3000 rounds a month.