Please don't assume it is the same as beef. Deer has much less fat, and will be quite tough because of this. I would suggest you marinade it for about an hour before you cook it, and don't overcook it, it is best a bit rare. A good marinade I found is chopped garlic, sesame seed oil (just a few drops, it's very strong) and some soy sauce, sometimes I add a bit of tomato juice, but not required. Do not cover the meat completely with the marinade, you only need a little bit in the bottom of a bowl, and turn it over after about 1/2 of the time you have it in the marinade. It is a wonderful meat if cooked correctly. As my husband used to hunt, we have eaten lots of deer, moose, elk, etc., deer is the best of the bunch by far though.