1 - Install Emacs 24


Ubuntu / Debian based systems

Emacs version 24 is available via the software center from Ubuntu 13.10 onwards.  If you have an older version of Ubuntu then you can use 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