turkey hunting???

[Arrowmike]

I have decided to try turkey hunting this year, so any info on this would be great. I know next to nothing about hunting them.
Im thinking that I may take the shotgun with so what type of choke and load should I use? The gun is a Remington 12ga 26”barrel. And if my son goes I’ll be getting him a Mossberg 20 ga 20”barrel.
Next is calls and decoys how and when do you use them? What are good ones? Any good DVD to learn calling?