Buy this book
your intereseted in Scrum. I have read quite a few, but this one is different: very, very compact funny to read no fluff no "why it works" just: "we do it this way, and it worked" and "we did it that way, and it sucked". A must read, at least ... Other labels:
xp, book
User Stories and Release Planning
Quite a good talk (Face & Slides) on InfoQ about the (in Scrum speak) Product Owner´s work on agile development. Watch it http://www.infoq.com/presentations/AgileProjectLifecycleRachelDavies Other labels:
agile, story