*taps mic* is this thing on? first show advice + what to expect!!?

helloo ^0^ this my first time doing one of these lol anyways I'm looking forward to attending a hardcore show in the near future, in the sf/berkeley area. specifically at 924 gilman! I've never been to a show in my life and ik theres etiquette n stuff i gotta look out for. overall i wanna avoid getting crowdkilled and decked in the face- crowdsurfing would be dope tho! basically: what should i expect? especially in the local scene? are there any unspoken rules i should know about? all ur first timer tips i'd love to hear them <3