The easiest to use call that allows a newer hunter flexibility is a push pin call. Basically a small box with two pins one on each end and you push and pull those pins to make a range of call. Just and idea. I like the slate the best , but that and the box call (which is pretty easy too) require some movement.
Box call- I like the Primo Box Cutter
slate- HS Struts new Ring Zone sounds very nice
Mouth calls- Either HS or Primo will have a multi-pack with a DVD on how to use the calls
Owl Call- Palmer Hoot Tube by HS Strut
Crow call- I have not heard a really bad one

I have one more piece of advise- call soft and infrequent at first and work your way to more and louder.
Be Safe!!