Look up SCCA Solo in your area.
You can either sign up online or find out where your local runnings are at.
IF you show up in person ... SHOW UP EARLY ...
It takes time to sign in and get all of your things together. Also make sure you have at least 65 bucks in cash **Different per region ... ** but 65 would cover any body.
You need to also have a SNELL 2005 Approved Helmet or better ... or is it SNELL 95 ... I don't remember ... Just get a SNELL 2005 and you will be fine. If you don't know how to check that ... when looking at helmets you just look inside and find the Stamp or really stuck on sticker of the Snell approval on the inside of the helmet. It will say what number after snell.
Once you are in ... there is lots that you will learn from those out there. Meet and greet with some of the instructors and other drivers ... and soon you will be in with the running.