First cut of the Ex0 ininstructions.

ex0.tex

@@ -1,3 +1,73 @@
 \chapter{Exercise 0: The Setup}
 
-This is how you setup your computer to work through this book.
+In this chapter you get your system setup to do C programming.  The
+good news for anyone using Linux or Mac OSX is that you are on a
+system designed \emph{for} programming in C.  The authors of the
+C language were also instrumental in the creation of the Unix operating
+system, and both Linux and OSX are based on Unix.  In fact, the install
+will be incredibly easy.
+
+I have some bad news for users of Windows:  learning C on Windows
+is painful.  You can write C code for Windows, that's not a problem.
+The problem is all of the libraries, functions, and tools are just
+a little "off" from everyone else in the C world.  C came from
+Unix and is much easier on a Unix platform.  It's just a fact 
+of life that you'll have to accept I'm afraid.
+
+I wanted to get this bad news out right away so that you don't
+panic.  I'm not saying to avoid Windows entirely.  I am however
+saying that, if you want to have the easiest time learning C, then
+it's time to bust out some Unix and get dirty.  This could also
+be really good for you, since knowing a little bit of Unix will
+also teach you some of the idioms of C programming and expand
+your skills.
+
+This also means that for everyone you'll be using the 
+\emph{command line}.  Yep, I said it.  You've gotta get in there and
+type commands at the computer.  Don't be afraid though because
+I'll be telling you what to type and what it should look like,
+so you'll actually be learning quite a few mind expanding 
+skills at the same time.
+
+\section{Linux}
+
+On most Linux systems you just have to install a few packages.  For 
+Debian based systems, like Ubuntu you should just have to install
+a few things using these commands:
+
+\begin{code}{Installing Requirements On Ubuntu}
+\begin{Verbatim}
+$ aptitude install build-essential
+\end{Verbatim}
+\end{code}
+
+The above is an example of a command line prompt, so to get to where
+you can run that, find your "Terminal" program and run it first.  Then
+you'll get a shell prompt similar to the '\$' above and can type that
+command into it.  \emph{Do not type the '\$', just the stuff after it.}
+
+Once you've run that, you should be able to do the first Exercise in
+this book and it'll work.  If not then let me know.
+
+
+\section{Mac OSX}
+
+On Mac OSX the install is even easier.  First, you'll need to either 
+download the latest \ident{XCode} from Apple, or find your install
+DVD and install it from there.  The download will be massive and could
+take forever, so I recommend installing from the DVD.  Also, search
+online for "installing xcode" for instructions on how to do it.
+
+Once you're done installing XCode, and probably restarting your computer
+if it didn't make you do that, you can go find your Terminal program
+and get it put into your Dock.  You'll be using Terminal a lot in
+the book, so it's good to put it in a handy location.
+
+
+\section{Windows}
+
+For Windows users I'll show you how to get a basic Ubuntu Linux system up and
+running in a virtual machine so that you can still do all of my exercises, but
+avoid all the painful Linux installation problems.
+
+