The simplest way to use this configuration module is to use an ~/.xmonad/xmonad.hs like this:

 module Main (main) where

 import XMonad
 import XMonad.Config.Arossato (arossatoConfig)

 main :: IO ()
 main = xmonad =<< arossatoConfig

NOTE: that I'm using xmobar and, if you don't have xmobar in your PATH, this configuration will produce an error and xmonad will not start. If you don't want to install xmobar get rid of this line at the beginning of arossatoConfig.

You can use this module also as a starting point for writing your own configuration module from scratch. Save it as your ~/.xmonad/xmonad.hs and:

1. Change the module name from

 module XMonad.Config.Arossato
     ( -- * Usage
       -- $usage
       arossatoConfig
     ) where

to

 module Main where

2. Add a line like:

 main = xmonad =<< arossatoConfig

3. Start playing with the configuration options...;)