Thank you everyone for the information.
I recently did Laguna Seca with an instructor last month. It was superb. I was driving a grandma pace but towards the end of the day, I started to step it up a bit and started passing people. Part of it was just learning all the jargon my instructor was telling me.
I expect to buy a cage when I feel that I'm pushing my car to its limits.
2012 JZB E92 M3 Coupe. DCT/ZCP. Paint Match IND Cosmetic Package, Arkym Bumper, Verstrabe Paddles, LUX Angel Eyes, Vorsteiner double sided CF CSL trunk lid, Evolve Valve Exhaust, 19x9.5 et 21, 19x10.5 et 22 TE37 SL Pressed Graphite