I would go with the 9mm for a first gun. I would stay away from Glocks as I feel is not a beginners handgun from a safety stand point. The 44 mag has to much recoil to learn to shoot well and too expensive to get in enough practice time.
There are hundreds of millions of gun owners in this country, and not one of them will have an accident today. The only misuse of guns comes in environments where there are drugs, alcohol, bad parents, and undisciplined children. Period. Ted Nugent
Yes, i agree on choosing the 9mm. Even though i like the glock .45, i wouldnt wnt that for my first gun. I have a 9mm right now but, i had it for awhile and im used to it. im ready to sell it so i can upgrade to a .40.