It's complicated, but I recently fell out with my girlfriend and my close friends. Even though I'm alone now, I know I'm much better off. Where do I go from here? I want to make new friends and start a new life, but I have no idea where to start. I've never had to do this before. I'm 20 and currently working part time to save up money, but I start at a local college next spring. Maybe I should wait until then? I just don't know how to approach this.

I want to say first off that I understand your situation (despite the vagueness) and your not alone as I've been through that before.
You may be better off without those people, but friends are important in life. It's best not to wait, you don't want to fall into a rut and lose your social skills.

Not knowing the size of your community and what types of public gatherings there are, it's difficult to say how you can meet new friends, but if the college gives group tours, you could go on one (...or two...) and meet someone who is applying.