What I believe shouldn't be your guide. What do you believe? Hook-up culture is a feature of late adolescence particularly amongst college folk. This culture accepts and encourages casual sexual encounters, including one-night stands and a lack of commitment to relationships.
Think of it as the opposite of what you'd want in a marriage partner; therefore, think of yourself as engaging in behaviour that is the opposite of what someone else would want in a marriage partner. There'll be couplings, photos, jokes and discussions that you'll be sure to cringe about in years to come. Have a look at facebook pages for those a couple of years ahead of you. That's all.