Reading

I want to teach my girls how to read. They have a lot of books. We read them often. The girls know all the letters and recognize their names. What I want to know is how and when they move on to the beginner reader books. Yes, I know I'm impatient. But I don't remember learning how to read. I just always knew, or at least I did by the time I was four. I don't remember how the gap in the bridge was closed. I haven't found anything that explains the transition from recognizing your name to reading everything else. I also can't help feeling as though I'm over thinking it. So in the meantime, we'll be reading books, signs in the supermarket and anything else that comes along.