Just started streaming my racing on Youtube! Seems to go ok, apart from very little viewers on YT compared to Twitch. Just cannot stand the quality of the encoding that twitch hit you with unless you're a partnered channel!
Anyway, window!
Prepare for a learning curve.
There are 2 paths you can take, oval or road.
Both start in the rookie class with free tracks and free cars. I would suggest whatever route you take, start at the back of each grid. You will not be fast enough to race at the front, nor will your race craft be up to speed compared to some of the guys at the front.
Practice yourself for a few hours before going online, then practice for a few hours with other cars around you, even though you might be the safest driver out there, many are not that safe..
Only when you feel confident enough to be driving around other drivers at racing speed would I join an official race. Start at the back and stay on the black stuff, if you see someone going to dive bomb you at a corner, let them have it, chances are you will pass them when they smash into a wall 3 corners later!
Earn your SR, get out of rookies and then decide what cars you want to drive.
You can stay in rookies until D 4.0 of your SR licence, so that would give you loads of experience.
ANy more help just ask.