At times, it is better to be like the innocent kid inside the OR. Yes, it's a bit embarassing at first but in the end they will commend you more for asking questions, regardless of how many you ask rather than opening, setting up a sterile room and contaminating instruments. Saves you the trouble of having to delay a case because something needed to be resterilized since it was the only last set of instruments left!!!
By the way don't you have a Perioperative nurse educator to lead the way?