it isn't something that can be taught, it is something that you just know, and feel, I was extremely nervous the first time I kissed a girl. It was very sloppy, I sucked, she wasn't good either, but since we truly liked each other it didn't matter how bad the kiss was, it was a kiss and that is all that mattered. Just don't rush it, if you try to pop one on her and she doesn't want it or it isn't the right time you will blow everything, just be patient.
Right now I have been seeing a girl for about 3 weeks and we have gone out 4 times, I have not kissed her, I am playing hard to get, that way she wants me even more and our first kiss will be better than just something to say goodnight.