I have to agree. Turning calls can be simple or it can be hard. Duck calls from scratch with hand made tone boards would fit in that Hard category at first, and even after that, I think a lot of tone boards get scrapped by some very experienced call makers.
You might want to talk to him about a nicely turned barrel, and maybe an Echo insert. They are nice, and work really well. He will end up with a very unique call that blows nice and sounds good.
Otherwise, you are starting on a long journey that really has no end. It gets easier, but in the beginning, making duck calls from scratch is not a process that you can master in a few days, or even a few months.
Al @ THO