All of the advice and links (like the Kentucky Afield myself) will really help you. The only other advice I could add is just to slow down and take your time while field dressing the animal. It only takes the stomach to be split open or the bladder to splatter everywhere once to make you dry heave a little and learn a lesson. Personally, I enjoy field dressing the deer - nothing says success like a steaming gut pile on a fall morning!
I went to the woods because I wished to live deliberately, to front only the essential facts of life, and see if I could not learn what it had to teach, and not, when I came to die, discover that I had not lived.
-Henry David Thoreau