With the summer at hand and my daughter on the way, I thought it would be a good idea to put the current work for this (end-user) document online. On my developer page you can find the current draft of Linux Sea, a book on Gentoo Linux (technical, not the philosophy or any kind - a technical book for end users).
As I said, it's still in draft phase.
The book is available under a Creative Commons - Attribution, Share Alike, Non Commerial license. Once it is more final, I will put PDFs online as well.
Linux Sea