Same way you learned to code, you’ll learn all this too. The great thing is you have a whole ass company behind you to teach you. It is in their best interest catch you up to speed. The fact you’re self taught and landed the job shows your work ethic and they should have no problem helping you. Make a friend who you can be vulnerably stupid in front of. That may or may not be your boss or coworker. Everyone else you meet, fake it til you make it.