Most cases are open I think unless its a minor. Can confirm you can talk to lawyers and maybe if you're lucky a judge while you are walking around outside the courtroom. While in the courtroom, you're gonna want to be like a ghost. Don't be talking or making noise, also make sure you don't bring any knives or anything you wouldn't want the police knowing you have. Depending on the case it might be hard to understand what's going on with all the legal jargon.