Definitely join your class page on Facebook! A lot of events are posted there for you to attend and meet people. With the ResLife portal, you should be able to find roommates and choose the building and room you want to live in.
Quad vs. Blitman:
Quad is closer to the campus but with smaller living spaces. Blitman has only doubles but the rooms are big and each room has its own bathroom and shower.
I don’t know that much about greek life, but I do that they have bondings from time to time for people to meet each other.