Don't let your stutter hold you back! When I went to college I launched myself into a bunch of different clubs and organizations despite my stutter. Most people are much nicer than they were in highschool! I disagree with the other commenter about not joining extracurriculars. These are important, not only for your college experience, but they also look great on a resume after college. And you can always start small, there's a lot of clubs that have 10 people or less that are always welcoming others. I'd also recommend Greek life but that one is school dependent. Good luck!