Yes, start with a few extra psi in the tires, but leave the DSC in M-Dynamic Mode while you're a novice. I'm relatively expert and leave it on most of the time and only turn it off for certain types of turns. If you want to be fast, focus on smoothness and NOT driving with the throttle. That can look dramatic and be fun to do a little bit, but you leave tons of time every time you slide the rear out vs. moving the car forward. There's a lot to learn, so try to find some good autocross books and more detailed tips online.
Catching a ride in an expert's car and having good drivers ride in your car as you drive are two very valuable aids, for those clubs that allow it. I took a first time novice once and he gained three-seconds after riding with me for just one lap, because he didn't really have a feel for how much the car could do. He was still seconds behind me, but he improved greatly and was far from the slowest in his class.
Most clubs have an AX school once a year. Try to do that for sure.