Hey if you haven't picked out a call yet look into a Zink Power Hen Poly Carb Double Reed. The call is easy to blow and sounds great, you can also get an instructional DVD (Waterfowl University) that will teach you the basics of duck calling (when to call, how to hold your call, where to get the air to call, etc...). The call and DVD should'nt be more than $50. What ever call you get, get an instructional DVD/CD and practice. Check out the Zink Calls website for more information.
www.zinkcalls.com