emacs

Learning GNU Emacs, Third Edition
$39.95
Emacs comes with great documentation, and there is a ton of it on the web. Nevertheless a structured book that is well-designed with great illustrations and examples is priceless. Despite my level of skill with Emacs (I "live in Emacs," using it for all my basic computing tasks), I consult this book regularly. It's a regular part of my Emacs library!

This book covers more than just using the editor: building Emacs from source, the help system, and Emacs Lisp are covered as well. This book is always telling me about things that I didn't know Emacs could do.

Although I have read a few chapters from front-to-back, I mainly use this book as a reference.

Apple Mini-VGA to VGA Display Adapter Mac
$22.99
THEY DONT SEND YOU THE RIGHT THIS AND THEN THEY DO NOT EMAIL YOU BACK WHEN YOU TRY TO GET A HOLD OF THEM

DONT BUY FROM THIS COMPANY!

GNU Emacs Manual, For Version 21, 15th Edition
$20.00
Got the book two years ago while working as an adm. tech for a small company. I was familiar with vi but decided this one was more customizable. Got the latest copy just to update for the job.

An Introduction to Programming in Emacs Lisp
$35.00
A very good introduction to using elisp. I have about a decade of experience programming and extending Emacs; I picked this up to consider giving it to my computer science students. I finally decided against it only because Successful Lisp is such an amazing book. No, really, I cannot recommend Successful Lisp highly enough.

This book is very good and focuses on the specifics of Emacs Lisp. If you are interested in extending that venerable editor, this is a good place to start. If you are interested in learning programming in Lisp (specifically Common Lisp), take a look at Successful Lisp.