The guys above are absolutely correct.
Always keep your door open. When I was in the dorms, our door was only closed at night and when privacy was needed (sometimes not even then
). If you walk down the hall and hear something interesting in one of the rooms, knock and ask if you can come in and look, then introduce yourself. If you try and meet people, you will.
A lot of schools will have some sort of organization fair where all the student groups will set up a table and try to recruit students. Look around there, and most likely you will find something that interests you.
Also, talk to the people in your classes, especially the ones for your major. Since you will have at least one thing in commen with them, you might be able to befriend them.
I am a very shy person, and didn't actively try and meet people, but I still managed to get a bunch of friends just through doing those things. You should be able to as well
