Post some laps and I'll put some notes. Also go to NASAproracing.com they have a forum for American Iron and american Iron extreme. I would search thier for some alignment settings. Bleed you brake fluid and slap some new pads on it. If you can spare the coin get some HP plus pads and some motul or ATE racing dot 3 fluid. THis is important because if your brakes start to fade then you will not have consistant braking points and you will not be able to run constant laps.
Next I would call whoever you are running with and find out what trrack configuration will be run. Buttonwillow has at least 13. They really only run four of them for street cars and they are clockwise or counterclockwise with or without the "star mazda" corner.
Regardless of the configuration I promise thier are videos on the net for you to watch. Thier are also track maps that talk you through the line available. Just remember RWD FWD or AWD all have different lines.
When you are at the track take the first session slow and concentrate on finding markers or fixed objects to mark your braking and turn-in points. There are plenty to choose from.
Buttonwillow is the tightest and most techinical track in Socal (Streets of willow was originally designed for superbikes and only gay ricers
and gay-er drifters run it
). So be patient and build speed over the course of the day.
When you familiarize yourself with the layout of the track call me and I will talk you through a lap corner by corner.
After your sessions park the car in gear with the E-Brake OFF( if they are on the rotors will cool unevenly and worp). Immediately check you tire pressure. Toyos and the Nittos like to run in the high 30's or low 40's. I would start them at 39 and play with them. They have wear indictors on the side that will indicate if you need nore or less pressure.