Turkey is really easy to overcook, and even the most experienced cooks can end up with dry turkey.
For your first turkey, I would NOT recommend you try frying it. While delicious, fried turkey requires special equipment and can be more than a little dangerous for a novice cook.
Brining is a great way to end up with a delicious moist bird, and it gives you a little more "wiggle room" in the cooking time. It is, a LOT of preparation, but totally worth the effort. It's not hard though. you'll need a big container, big enough to submerge the turkey. I use a clean camping cooler, and that way I also save space in the refrigerator. The idea of brining is that the salt breaks down the cell structure of the turkey meat so that it can absorb more water. More water=moister turkey. You add flavorings to the brine so it gets absorbed by the cells and produces a tasty turkey. You'll brine the turkey the day before you cook it, and it must be completely thawed-that's going to take about 3-4 days in the refrigerator (NEVER thaw a turkey on the counter or in the sink). So, since Thanksgiving is on Thursday, put it in the refrigerator Sunday, and prepare your brine on Wednesday. If you're cooking it Wednesday, start thawing it Friday, and brine it Tuesday.
Here is a basic brine recipe (you may need to double or triple it to have enough brine to COMPLETELY cover the bird).
* 4 quarts water
* 2 cups dark brown sugar
* 1 cup soy sauce
* 1 cup maple syrup
* 3/4 cup sea or kosher salt
Put it in a big pot on the stove and bring it to a boil. Make sure all the sugar is dissolved. Let cool completely. If you want to get really fancy you can add garlic or bay leaves or other herbs to it...I'd stick with the basic recipe your first time around.
You'll brine the turkey the day before you cook it.
Unwrap the turkey and remove the giblets packets from cavity if it has one. Also check the other end for the neck and remove. Put the packet and the neck in a bowl in the refrigerator-if you plan to use them for stuffing, otherwise throw them away.. Put the THAWED turkey in the container (a cooler really does work best and pour the brine over the bird and make sure it's completely covered.If you dunk the bird, the brine should fill the cavity and submerge it. If it still floats a little you'll have to weight the top (use a large ziplock filled with ice. Put the bird in the refrigerator, or if you're using a cooler add a 5 pound bag of ice don't take it out of the bag..just set it on top) and shut the cooler.
Now, when you are ready to cook the bird, remove from the brine, rinse well and pat dry with paper towels, DISCARD THE BRINE and the ice. I feed it to my chickens, but you put it down the sink or toilet.
I never stuff my turkey. It increases the cooking time, and personally I think it's a pain in the butt. I cook my dressing separately in the crockpot.
I rub the turkey skin all over with butter or olive oil (this will help make the skin crispy) and salt and pepper it. Then I cut a couple stalks of celery, and quarter an apple and a peeled onion and shove them in the cavity. As the bird cooks, they steam and add extra moisture, and they do do not increase the cooking time.
Put your turkey in a roasting pan and cover loosely with foil.
You'll bake the turkey at 350 degrees (preheat the oven first) until done. here's a guide for the cooking time:
if your turkey is 10-18 pounds you'll cook it for 3-3 1/2 hours (unstuffed). Add 45 minutes if it is stuffed.
For a 15 to 22 pound turkey you'll cook it 3 1/2- 4 hours. (again, unstuffed). It will start to smell heavenly after about an an hour and a half.
SOme people people baste the turkey every half hour or so, but I never do. If you want a nice crispy brown skin remove the foil for the last half hour of cooking time.
Your turkey might have a little "pop-up" thermometer to tell you if it's done.
Once you remove the turkey from the oven , DO NOT cut into it right away. It is really important to let it rest for about 20-30 minutes first. This allows all the juices to settle back into the meat. If you cut it while it is freshly out of the oven, you will get a gush of juices, but your meat will be dry.
I know this seems like a lot of work, but there's nothing hard about it, and I'm sure you'll do great!
UPDATE: If your turkey is already brined (which yours is) just thaw it and cook it as I've described.