I'll add two specific things I learned during my first time on the track last fall/winter.
Turn 2: be wary. You'll be cresting the hill as you're going into the turn, so the car will get a little light. Add to that the fact that the track feels like it's sloping toward the outside (is sloping toward the outside?), and it's easy to go off there.
I was in a car where we had to carry a bunch of speed up the hill so we didn't get bogged down, and I got a little carried away on an early lap and wasn't even close to making the turn. Shot more or less straight off.
Turn 4: there's a bump somewhere along the inside of that turn near the apex, and it unsettled the car every time I hit it. It felt like the car was about to lose it a few times. I also felt like I was able to go through the turn just as fast by not quite hitting the apex. Obviously, some cars may soak up the bump better than others; and I may well have just been overly sensitive to it; but it gave me peace of mind to not hit that bump, so it worked for me.
Other than those two things, the track is pretty straight forward, and very fun. The esses were a blast!