I learned how to do this (and use the recipe from) This Website and I highly recommend it. The video is really good if you're into bread. However last time I posted my zopf, someone mentioned they didn't want to install anything to watch the video.
So while making today's loaves, I took pictures for you, internets. Here you go:
(continue as so until bottom)
Ask if you've got questions - I'll be stupid busy the next day or so but I'll get back to you. En guete!