Doesn't cover everything, but I've been using Emacs for 3 years and learned a lot here

LEARNING GNU EMACS is an introduction to the most powerful text editor ever made, a fully-programmable environment that through contributions from thousands has become something of an operating system in itself. This third edition covers all the new enhancements made in version 21.3.

The book begins with an introduction to Emacs as it : a text editor. It gives basic commands for moving around, describes the look of the user interface, teaches how to search and replace, and how to make simple (and not-so-simple) macros. But Emacs isn't just a simple text editor, it also has extensions to do everything from drawing simple pictures to managing your schedule. In the next portion the book describes among other things Dired, the Emacs file manager, the calendar and diary functions, and how to execute commands from within Emacs.

Since Emacs functions as an integrated-development environment for many programming languages, a fairly large portion of the book focus on how Emacs can help the software developer. Concerning markup languages, this new edition covers the excellent nxml mode for XML documents, and in terms of computer languages it describes modes for C, C++, Java, Perl, SQL, and Lisp. Unfortunately, the Python mode is not discussed. An entire chapter is devoted to Emacs' interface to version control systems like CVS.

The book doesn't aim itself at only a beginner's market. It teaches one already proficient in editing to customize Emacs. At the simplest, this means tinkering with one's "~/.emacs" file, but it also includes using the power of Lisp to change all aspects of Emacs.

This book could only be perfect if it were twice as large as it is now, since Emacs has so much in it. I think it a pity that the book doesn't cover Gnus, a mail and news reader that takes advantage of Emacs' scriptable nature to offer immense configurability and power. In fact, it doesn't cover the popular Mew mail reader or Emacs' limited built-in mail reader at all. Also, the bit on search and replace doesn't give any small intro to regular expressions.

Emacs is not for everyone, and even with a fine book like this some people are not going to like it. But if you are comfortable doing basic editing with Emacs, and want to maximize your efficiency, then LEARNING GNU EMACS can help.

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