I know I always feel a lot better about a coyote I called in using the hand calls. It has a more personal feel compared to pushing a button and waiting for something to happen.
If I were going to get a few calls here is what I would start with:
1. A sqeeker call -This will imitate a small rodent as is used in several situations. I use it many times for my first series of calls. If a coyote is close, that may be all you need. If you have a coyote coming in while using another all and he is fairly close, you will want to use the sqeeker to coax him into range.
2. 2 types of prey calls (minimum)- Typically they are going to be some type of rabbit, but there are also other sounds available. Always have more than one prey sound so you will be able to mix it up at different stands. You won’t necessarily use them at every set.
Now, with predator hunting, you have to think “outside the box” when it comes to calls. I have used everything from deer calls, Lead cow-calf elk calls, and turkey diaphragm calls. Almost any call out there has the capability to make distress sounds. Turkey diaphragm calls makes excellent puppy whines. A fawn bleat call will also work if you make the sound distressed. The lead cow-calf elk call if blown harder will also make great distres sounds.
Key word here is “distress”!!!! That is what the coyote will key in on when he hears the call, it will sound like an easy meal to them.
So, when looking for calls, keep this in mind. For the novice caller, it is easier to stick with the basics and there are several good kits out there from different manufacturers. Most of my calls are “Primos”, but don’t let that stop you from checking out the others 
