Turkey Roasting Times Per Pound?

Im a teen and Im basicailly in charge for turkey and thanksgiving this year for my family!
I need to have dinner ready at 8pm. I was told to cook it at 350 degrees. Do I cover the bird with foil? and most important, how long will it take?
How much time per pound do you give for roasting a large turkey with no stuffing?
can you please help me so I don't make a mess?

Here's a handy chart that will help you estimate the amount of time required to cook a whole turkey in the oven. These times are based on placing the bird on a rack in a roasting pan, and into a preheated 350 degree F (175 degrees C) oven.

10 to 15 pounds - 3 to 3-1/2 hours - 3-3/4 to 4-1/2 hours
15 to 22 pounds - 3-1/2 to 4 hours - 4-1/2 to 5 hours
22 to 24 pounds - 4 to 4-1/2 hours - 5 to 5-1/2 hours
24 to 29 pounds - 4-1/2 to 5 hours - 5-1/2 to 6-1/4 hours

A tutorial video gives you the best directions, better than I can explain... and I hate those recipes that say just put it in a cooking-bag and put it in the oven. Those kind of turkeys don't have a nice crisp skin.