I've never tracked a car before. Just curious if you adjust the tire pressures for the track, if so do you go higher or lower.

 

Generally you lower the pressures as the air expands as you get heat into the tyres

 

If you haven't tracked before, start w/ the OEM recommended cold pressures and then check them at the end of each session. The faster you get the hotter the tires will be, obviously, and eventually you will have to start letting some air out. For the stock PZeroes I'd recommend hot pressures of 34/38ish front/rear. The rears get greasy over 40 in my experience.