I had few friends at school and when I was dropped into university it was like shell shock! Nothing to talk about.
I was lucky enough to make a couple of good mates and later made a really good friend on my course (at first I was really rude to him - he was being friendly and I had no idea how to respond). Beyond that group of 8 or so people I struggle to interact socially (or used to).
I get the thinking behind this exercise is great: Im just worried your setting a lot by it. I've spent time studying social interaction becuase i find it interesting. Take talking to people on buses - your unlikely to make headway of any sort all the time because people just dont respond to that. The social consensus tells people that if someone talks to them in that situation out of the blue they are either mad or bad! I mentioned familiartiy before: generally people will accept nods, a shared joke or very very minor small talk in the situations your putting yourself in. If they see you in that context a few times in a row they will be happier to open up more because of familiarity (he talkjed to me before, the world didnt end, safe).
I think your 30days thing will be of value as long as your take away is that people are very introvert people generally and your social difficulties are perhaps exacerbated but not unique (aka everyone feels a bit like that). I do feel the most important thing is to make longer term friendships. They will be a lot more beneficial (in my experience)
EDIT: where do you live? Im guessing the US which is the shame otherwise I would happily pop by and say hi in person (meeting someone I had "broken ice" with online really helped me once).
EDIT: to add a bit more - you've done amazingly well to get this far in. congrats! The secret is, Im guessing, that most "normal" (as in socially comfortable) wouldnt have made it this far.