Tips on entering the real ‘gay world’?

ok so i’m about to graduate high school in a couple of months (thank god!) and i’m more than ready to start anew somewhere else in college, especially a larger, urban city. coming from a largely sheltered suburb town, i probably don’t know a lot of things that some of you more experienced guys would know. so that begs the questions, what should i as a young gay man know upon entering the real world???