You were brought here through a mystical Seal. That's kind of a hard thing to process for some people, I know, especially if you've never dealt with this sort of thing before. The Seal in itself is a long and complicated story, but it did somehow see something in you that made you susceptible to it's draw. I wish I could tell you why it dragged you through - some people say that it's because some of you were meant to be here, others think it's a fluke and all at random - but you are here.
And here is an alternate universe. You're nowhere near home, I'm afraid, and it might be a long while until you get back again. Fortunately, there are a lot of people who are willing to help - myself included. There are places where you can stay, there are people who can teach you how to defend yourself from some of the - uh, where do we stand on the supernatural, exactly?