M-x package-refresh-contents M-x package-install RET starter-kit RET M-x package-install starter-kit-bindings http://www.kieranhealy.org/esk/starter-kit-bindings.html package-list-packages RET ruby major mode M-x package-install starter-kit-ruby http://www.emacswiki.org/cgi-bin/wiki/InteractivelyDoThings https://github.com/capitaomorte/yasnippet http://www.emacswiki.org/emacs/FlymakeRuby http://www.nongnu.org/color-theme/index.html