See these 10, 15, and 20 min guided awareness of breathing meditations. The longer meditations contain more detailed instructions of the technique. I will be uploading a 30 and 40 min meditation, as soon as i make it. This will contain most of the guidelines for this particular technique..
See the video on youtube. Here is the playlist link. http://www.youtube.com/playlist?list=PL92F17990D6B7422C&feature=view_all