Hey, with the holidays looming ever closer you couldn't of found a better time to catch the holiday bug
Anyways my advice before jumping into that first game is to take a few good read throughs your rulebook, and when you think you have the rules down, go through them again! This goes the same for your codices, as nothing slows down the game, or agrivates the players like a "quick check" in the rulebook every five minutes. Don't worry if you need to check a few times, all of us do, just try to get a good grasp on the rules before jumping into that first game.