There are a few "publications". I gave a presentation at linux.conf.au 2010linux.conf.au 2010 on the system as a whole that covers everything generally, which is available in video: ogv mp4 (also on your local Linux Australia mirror); I also wrote up my noteswrote up my notes into prose. There are also a few older documents, including the famous "I am not cluelessI am not clueless", on the GoboLinux website, which addresses some objections and issues. I think that we're all a bit less gung-ho these days, and I suspect that a future release will adopt /usr as the base location for the symlinks.