About a month ago, I was asked what kind of holster to purchase. And I just didn't and still don't know. I blogged about it here.
JayG at MArooned was one of several people who gave me some direction. He has now put up a primer on obtaining a holster for your gun. He has gained a lot of wisdom from so many years of carrying a gun and I listen to his advice. You should go check it out and heed his wisdom.