Some of the sexual pressures that college freshmen typically face are trying to find out what is normal to do and what is expected. Most freshmen that I know are having sex and it does not seem to be weird or taboo. If I gave advice to people one or two years younger then me I would tell them do what you feel is right for you and do not let other people make your decisions for you.
I think that the rules for dating should start off casual with just dates here and there to get to know each other. I think dinner is a good date, but going to the movies for the first few dates is a no-no because you cannot talk. I think it is good to find out information about someone before you go out because you do not want to put yourself in a bad situation. I think what is typical is looking on the other persons myspace/facebook page.
Dating is a complicated topic because there are many things going on at once and its good to keep them in order.