Hi Ben and welcome aboard.
If you have just been approved at basic level, you should request 501st clearance so you can see more sections of our forums.
Here is where you can do that.
As to actual trooping, you can decide to stay in character and act just like an imperial Stormtrooper would, some like to be more entertaining for the kids, or put on an ascent to sound like the TK's in the movies etc.
It really depends on the troop itself as some require you remain in charecter, others like Conventions etc, do not.
Take cues off your fellow troopers, see how they are acting and follow suit.
One thing is for certain, you will never forget your first troop, it is exhilarating, to say the least.
Some find themselves overwhelmed and shed a tear because it has been a life long dream to take something from child hood and turn it into a reality.
I wish you the greatest of satisfaction on your first official troop, and becoming an active member of the FISD community.
Congratulations Trooper.