Being a new hunter with no experience field dressing a deer you are in for some fun. I have told a lot of new hunters this same thing. What is in the inside needs to come outside and don't cut anything that is not suppose to be cut. That being said there is an article here that may give you some idea on what to do along with the article are some comments that you might want to read. http://www.biggamehunt.net/sections/Whitetail_Deer/Field_Dressing_a_Deer_11080412.html
As far as how I do it here goes.
Take your tag out of your pocket and validate it. In some states you can leave it off of the body while you drag it out but have it validated and in your pocket.
Ream the A hole all the way around
I will then take the penis and skin it and the tube down to the A hole
Make a small hole into the body cavity and place two fingers upside down into the cavity to keep the stomach and intestines away from the knife, then take the knife and insert it between your fingers and slit the muscle up to the sternum.
Roll what you can outside the body then reach in with your knife and cut the diaphragm. After you do this you should be able to get most of the innards outside the cavity. If you reamed the A hole enough you should be able to pull it and the penis out through the body cavity. You may want to split the pelvis to help you get it out.
Now reach up into the chest area and cut the windpipe and drag out the heart and lungs. Now if you cut the throat and windpipe you can just grab a hold of it above the lungs or heart and pull hard and it will come out. Now cutting the throat depends on if you are planning on mounting the head or not. If you are going to mount the head then do not cut the throat.
I'll then place the hind end down hill and drain all the blood out that is left in the body cavity. Place the liver and heart into a bag (if you like eating it) then head for the truck.
There is nothing like experience doing this or having somebody show you how your first time, or at least being at hand to help if you need it.
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