Too Long; Didn't Read
I’m endlessly fascinated by Linux, to the extent that I wrote a book about it, <a href="http://bit.ly/1OfALRh" target="_blank"><em>Learn Linux in a Month of Lunches</em></a>. My very favorite thing about Linux is the desktop environment concept. Desktop environments are graphical interfaces for the entire operating system, but where most operating systems, like Windows, OS X, iOS, and Android, have one common interface, Linux users can easily install and user a variety of interfaces without changing their underlying system.