I had little to none up until I was nearly 25 (and I'm 25 now)
So basically I'm very new to this whole social life thing. I've had under a year of training, but here is what I have managed so far:
After "breaking the silence", most of my new friends were made through Intervarsity, I made a few aquaintances through my graduate program (but for some reason I get along much better with the undergraduates... which means that no socialization occurs inside the classroom, meaning that I need to look elsewhere for it), and I made some friends after walking into a random party. I also made a large number of temporary friends at a week-long summer camp sponsored by Intervarsity; none of these friends lasted past camp, but it was a very good experience and I got to know the other people in my local Intervarsity chapter a lot better.
Over the summer, I returned to my folk's place (since my job up where I was going to college isn't available, since it was through the department and there aren't enough classes available to take)
Here, I've hung out with my brother's friends several times (even though they very much are "the wrong crowd") but I'm not feeling very accepted there... mostly because I'm really not like them and there is some stigma associated with being his brother.
Outside of that, I have started getting involved with a local church over the past few weeks. Just about everyone there is very friendly, and I chat with whoever I can (some of the staff, most of the young adults, and a few random others) and provide friendly greetings to most of the rest. There are really only two people I know very well there though.
Through that group, I have recieved invitations to go on a few of the group events.
Though the largest part of my "social life" doesn't involve being around other people. Instead, it's reading WP and many other websites, thinking about how to be sociable for hours on end, attempting to build my own models regarding the processes I observe, and figuring out how to behave better in such situations given the output of my research.
...I guess I've made "getting a social life" one my aspie-level interests. I know it sure takes a lot more time than any of my traditional ones (games, anime, computer and math stuff)