Another thing that new hunters overlook is having everything needed to take care of a deer after it hits the ground.
Know how you are going to get it out of the woods. Have a sharp knife and saw. Game bags if you plan on skinning it in the woods, so the meat stays clean. Something to put the heart and liver in if you keep them. Know where you are going to hang it, is the weather cool enough for it to be outside or in an unheated shop/garage/shed, or will it need to be in a cooler.