First off, welcome to the forum and welcome to dragracing!
Its great to meet new people interested in this great sport.
I would recomend a DOT street class first if they have one at your local track or you could go in footbrake class, both are entry level classes but don't let that fool you, rest assured there are plenty of talented drivers running in them classes ready to take your money.
You'll want to work on the tree first thing. You will need to consistentley cut a light to be competetive or you'll be wasting your time and money which I'm sure you already know if you know anything at all about dragracing or bracket racing. Its the one thing that will get you an advantage over you opponent.
I would recomend going to a few test and tune sessions working on your reaction times till you get comfortable feel like you can be competetive.
There's much more to talk about and learn but I'm not real sure where yoru at and what all you know already so I'll just leave it at that for now.
Let us know what all you've done and know about dragracing and we'll go from there.
Goodluck, Charles