1 - Install Emacs 24


Ubuntu / Debian based systems

Emacs version 24 is not officially part of Ubuntu as yet, but it is packaged by in an Ubuntu personal package archive (PPA) on launchpad.net https://launchpad.net/~cassou/+archive/emacs

Open a terminal window and run the following commands to add the personal package archive to your software library and install Emacs 24

  sudo apt-add-repository ppa:cassou/emacs

  sudo apt-get update

  sudo apt-get install emacs-snapshot emacs-goodies-el



Mac OSX

The best method I have found is to use EmacsForMacOSX, although some developers prefer Aquamacs or using homebrew.  Have a look at the article Getting Started with Emacs 24 for MacOSX.


Microsoft

Gnu Emacs on windows