You say you talk to people online so you have to "continue" to talk to those people in person. Go over and join those people and, if you are familiar with their online posts, talk about something they have mentioned online recently. You cannot get friends if you do not show up/stay and try to make them. Other people are trying to make friends too and uncomfortable about meeting new people, etc. If they have been at the school longer or know people from before, etc. that does make hanging out easier for them. Do something like ask to borrow the notes of someone you sit near in one of your classes, strike up a conversation about the class. You need things in common and the school work is a good first place to start. Indirectly address small groups of people, "Did anyone get problem #4, I spent half an hour on it and still don't understand. . ." you are among before class or if you see a small group at lunch or somewhere that several of are in the same class with you. You or they get talking and the other people you don't know chime in and soon you know the people you don't know

How do you get names/make friends online? If you ever ask someone in person for their online name/address, take the conversation a little further by complementing or asking them about something you know about them ("Hey, I heard about that UMG tournament you were in. . ." and discuss it and see if anything comes of that (an invite to come over or meet somewhere, etc.).