I agree that your first purchase should be a box or slate call or both. Some will come with a tape of real turkey calls. Since you're going to try bowhunting for them first I would look into buying or making a blind. It is difficult to draw on a turkey without a blind. Simple wall blinds can be made from 20' of camo material and a few old arrows or dow rods or bought for less than $100. Assuming your state allows decoys I would purchase a hen and a jake next. I'd then purchase a locater call like an owl hooter or crow call. To organize all of this I would then buy a turkey vest with a built in seat. If you have a limited budget, just buy one or two items each year.

Lefty Llewellyn