Welcome to the Glock.pro forums!For your first competition, I would concentrate on several things:
1. Safety: This has to become automatic, so pay attention to safety first. Be very careful not to "break 180", and keep your finger out of the trigger guard when you're moving.
2. Listen and learn the procedures: As others have mentioned, learn by watching and asking others. Once you tell your squad that you're a new shooter, there will be no shortage of helpful advice and coaching. It will also take the pressure off to perform well in this first match.
3. Listen carefully to the stage briefings, ask questions if you don't understand something, and "walk through" the stages as you see others do, planning where they will shoot and change magazines. Doing this, you will be sure to see all of the targets in the stage before you attempt to shoot the stage.
4. Just hit the targets, and don't worry about speed, at least not yet.
Congratulations on getting into action shooting competition, I hope you find it both challenging and rewarding!
Chris
You seem to know a lot about practical shooting... Hope you stick around!