No book on Emacs

I’ve had a Skribit suggestion for my blog, with seven votes on it, that asks:

Can you write a Byte Of Emacs?

First of all, I’m flattered that 7 people out there like A Byte of Vim so much that they are asking about a similar book for Emacs.

Second, it just won’t happen. Almost never.

Why? Because:

• Writing a book is hard. It just sucks the life out of you. Really. Don’t believe me? Try writing one. Really.
• Writing a book means I have to be at least reasonably proficient on that topic or at least have good experience with it.
• I have used Emacs quite often in the past, especially for its SGML mode. But once I became proficient at Vim, I never went back.
• There’s no incentive for me to learn about Emacs in depth and then write a book on it. There’s no point in trying to master two different but great editors!

That being said, does anyone have a good resource list for Emacs for these 7 people? :)