Where do you live, if there is a local track around you go to their website and check their schedules. If they have open track days go out there pay a small fee and just drive man. Take a few laps get comfortable, and then just keep pushing yourself further and further. And at the end of the day if you still want to do it go talk to a track director, ask around anything. Someone will help you out find what you need to find. There are classes where you need to do mods to the car and there are others you can just run stock run whatcha brung classes. Motorsports is all about how far you want to take it, and mostly how much you want to spend. But just have fun and take it to the track, it's the safest and most controlled place for speed.