Motor Sport Ranch has something going on pretty much every weekend. Check out
https://www.thedriversedge.net,
www.apexdrivingacademy.com/,
www.lsrpca.com, for track event dates and times. No porsche needeed for the porsche club ones. The community is awesome here in Texas and everyone is willing to talk and answer questions at events. You can score ride alongs with lots of people which will really help you learn. Events are open to the public so bring a helmet out on a weekend and have fun.
Hit up Texas Track Works if you're thinking about doing an HPDE and they'll get you set up with tech inspection, brake fluid flush, and anything else you may need for the event.
http://texastrackworks.com/