AFAIK you can load all 6 rounds.
I'd suggest taking a basic pistol course. The NRA web site can find an instructor in your area.
50 rounds every other day is fine. You'll want to increase that once you find a supply of ammo.
For right now I'd concentrate on right hand, both two and one handed. Shoot a cylinder left handed just for fun.
Concentrate on the basics, good stance, grip, trigger control and sight picture.
Move out to ten yards now and once you've had some lessons vary your distance between 10 and 25yds.