I'll have to second getting one of the little Circe 3-n-1 calls. You can make a wide variety of noises with that little call and it really isn't hard to use. Remember, a mouth call might sound weird to you, but 300 yards away that call sounds just like the real thing and in areas where everyone and their brother is running around with J-S and Foxpro calls, a mouth call can really seal the deal on call-shy coyotes.
I'm pretty new to this game myself, but I never call a stand without having the Circe in my pocket just in case.