I have tried cooking chicken in the crock pot many different ways. how do i keep it moist when ready to eat?

The key is timing. You have to cook it slow and be ready to eat as soon as it's done. You can cook it faster as well, but again, be ready to eat when it's done. If you wrap it in foil as someone else suggested, it continues to cook. Wrapping it traps the heat and thus makes it more done. Just make sure however you cook it, it has enough moisture (i.e. water or marinade) to withstand cooking time.