As stated earlier, I'm now focusing on the existing content of my (work-in-progress) ebook called Linux Sea (PDF, HTML). I'm going to add more text where appropriate, add exercises to each chapter as well as references to online resources.

When that's finished, I'll probably be writing a chapter on installing Gentoo Linux as that's a major end-user topic that isn't discussed yet (but luckily, there's still the Gentoo Handbook).