RE: Newbie here
As a lot of the guys said, get into a call that you are comfortable with, and most importantly, learn the area you hunt inside and out. I feel knowledge of the terrain is the most important part of turkey hunting, not necessarily what sounds you are making. Learn where the birds roost when they are under pressure, and you will consistently kill turkeys.
Watch videos and listen to as many turkeys as possible, and IMHO learn to use a diaphragm call as soon as possible. I only use these mouth calls anymore other than a crow call and owl hooter for locating. I rarely use the locaters though unless I know the birds I am hunting are under little or no pressure......usually I get into the woods well before light and simply sit down within earshot of where I think they are roosted. I then listen for flydowns, 90% of the turkeys I actually kill I hear flydown, and I manage to kill them within the first hour of light.
When you have finally located a bird........DON'T BE AFRAID TO MOVE ON THEM. That is the best advise I can give. I try my best to get within 150 yards of them, closer if I think I can get away with it. If you hear them moving away, and they won't come in, reposition on the bird. If they simply shut up and you can't hear them, don't move for quite some time, they may be coming in silent.