I love allnurses.com! I found it before I got accepted into the nursing program and then re-discovered it half-way through my first semester.
It's great for me because I can ask questions and get a variety of answers from people from different backgrounds, get their different perspectives and feel connected.
I'm kind of shy in class, and although I am friendly and chat with my classmates, I can't say I've made any friends or been invited to any study groups. But now I have a place to go and ask whatever is on my mind!