Yes, welcome to the forum. I just bought my Mark III in May and cannot express how important this site is for me as a neophyte. I've never owned a pistol before (other than pellet guns recently) and haven't shot gun powder based weapons since the Army over 44 years ago.
Based on what I've read here and what I've shot at the range, I also just purchased a 6" GP100 revolver. As mentioned by davisscc, every time I've asked a question, help was immediate. Sometimes the information is conflicting but that makes it oh so intresting and forces me to do more research.
Enjoy the Mark III, it is fun to shoot. I was trying to figure out how many rounds I've shot since I purchased it a few months ago and I think it is close to 2,000. Did I say it was fun to shoot?