Some courses are held by IPSC others are held by the clubs themselves or members who do alot of work to put them on.
Rules though will very, IPSC does not allow "tactical" gear to be worn and your only allowed to carry one firearm at a time.
Some clubs have big boy rules which means you can usually carry 2 to 3 firearms on you while you shoot a variety of targets.
It usually involves pistol, shotgun and carbine. The targets also vary alot as do the props which may include walls, doors, cars (plywood) etc.
These matches seem to be more popular, or just allowed by clubs, more out your way than here in Ontario.
As the guys have said check out the Events forum