You are done when it is over for you. In hypermedia as in most things there is always more to say, or do, or bring to bear. We'll be writing more in a week or two. More links, more stories, more images, animations, and associated Webberei. We will also be folding the text back upon itself, building links and contours that celebrate the same, yet different.
Paths fork ahead, expect rapid changes in context.
If the text right now is decidedly linear, we hope to make it more or less fractal. We will try to post last-update notices on the entry page, but life is short.