Advice on all of American society could not fit within the scope of this single answer or even this whole website. What I can say is that in any institution of higher learning, there is a certain amount of respect expected from everyone generally. It’s small things like addressing a professor by “Professor (blank)” or not calling out in class, etc. It’s basic common sense. The upperclassmen are also a great resource on campus, so do not hesitate in asking for help or getting to know someone. You’ll just notice these things as you spend more time at RPI.