Welcome from ND David! I can testify that it performs very well in the cold. The only issue that I have ever had is the fat volcano that freezes before it can spread out in the drip tray. But as far as getting to and holding temp, I have never had a problem.
While not totally impossible, it is hard to screw things up too badly with these smokers. They are pretty fool proof. The best suggestion that I can give is to let you know that they do not require a lot of wood. for smokes less than 6 hours 2-3 ounces of wood is all you need and for 6+ hour smokes, 5-6 ounces is all you will need.
Other than that, take some time to read through the recipe threads for the cut of meat that you want to smoke and you'll get a lot of good advice. If you have questions that you aren't finding answers to, by all means let us know and we'll do our best to answer them.