Well nothing like waiting till the last minute! Not trying to put you off but you shouldve already had your gun patterned to find out your effective range with a sample of different ammo. Hunting ground with birds present shouldve been secured with legal permission. Learning to call while hunting is not usually productive. There are basically two types of calls. Friction and air. Friction calls include Box calls and Pot calls and both are friction type calls producing turkey sounds by creating friction between two things. Box calls are basically a box with two curved sides and a top which is curved and chalked with soft chalk. When the top is dragged oved one side it creates a call and when on the other side a different toned call. Pot calls have a pot made of many different materials. The pot is hollow with a top of Slate,glass,ceramic,aluminum or other material. A striker of many types of material(usually woods of different types) is worked at a 45 degree angle to create all the various turkey sounds. Diaphrams placed in the mouth and sealed against the roof of the mouth are another type producing all the turkey vocalizations and requiring limited movement which is a positive allowing free use of both hands. Its not really that complicated but like most things in life, you get out of it what you put into it!!!