What do I need to pass a vehicle safety inspection?

I just bought my first car! (It’s used.) I’m gonna head over to get it safety inspected in a minute, but I’m a little nervous. What exactly do they look for? Any sort of list or something would be nice, I can’t find it with google. Anything I should know beforehand? Thanks!

Oh, second question – I have to have a safety inspection before I can go get temporary tags from the DMV. (I have no plates at the moment.) But I am worried about my car being towed while I am inside the DMV. Anything I can do to prevent this?