Strategies for finding an internship at a SF startup?

I moved to SF not long ago from a backwater, soul sucking town in search for, at the very least, some livability. Though I don't hold a college degree, I have some acumen with programming and a decent knowledge of web development. I would like to consolidate and master these skills as an intern at some small startup (and earn some form of livable wage). I've haven't received any real responses to my emails that explain my situation and don't really know too much about startup culture in SF. As veterans (or neophytes), I'm hoping to gleam some advice on strategies from you on acquiring an internship.