Octopress 3 Documentation (Book Edition)
by Brandon Mathis et al
Note: The book edition is still an early release and a work-in-progess.
This is the (official) documentation for Octopress 3 - an obsessively designed collection of tools and addons for the Jekyll static site builder / generator - reformatted in a single-page book edition.
See the source repo for how the book gets auto-built with "plain" Jekyll - of course - and hosted on GitHub Pages.