Introduction step by step.

introduction/introduction.tex

 \documentclass[slidestop]{beamer}
 
+\usepackage{tikz}
+
 \input{../shared/shared.tex}
 
-\author{Jeroen F. J. Laros}
+\author{}
 \title{\courseTitle}
 \providecommand{\mySubTitle}{Introduction to Version Control}
 \providecommand{\myConference}{\courseTitle}
@@ -22,76 +24,166 @@
 
 % First page of the presentation.
 \section{Introduction}
-\subsection{Version control}
+
+\section{What is version control?}
+\subsection{Definition}
 \begin{pframe}
-  \emph{The management of changes to documents, computer programs, large web
-  sites, and other collections of information.} --- Wikipedia.
-  \bigskip
-  \pause
+  \emph{The \textbf{management of changes} to documents, computer programs, large web
+        sites, and other collections of information.}\\
+  --- \textcolor{darkgray}{\href{https://en.wikipedia.org/wiki/Version_control}{Wikipedia}}
+  \\ \\
+  \emph{A system that \textbf{records changes} to a file or set of files 
+        over time so that you can recall specific versions later.}\\
+  --- \textcolor{darkgray}{\href{https://git-scm.com/book/en/v2/Getting-Started-About-Version-Control}{https://git-scm.com/}}
 
-  General features:
-  \begin{itemize}
-    \item Keeping track of your files in an orderly manner.
+  \begin{tikzpicture}[remember picture,overlay]
+    \node[xshift=-3.3cm,yshift=-7.2cm] at (current page.north east) {\includegraphics[width=4cm]{images/version_control-slide.pdf}};
+  \end{tikzpicture}
+\end{pframe} 
+
+\subsection{Step by step}
+\begin{pframe}
+ \begin{center}
+  \includegraphics[width=1\textwidth]{images/vcs_example/vcs_example_00.pdf}
+ \end{center}
+\end{pframe} 
+
+\begin{pframe}
+ \begin{center}
+  \includegraphics[width=1\textwidth]{images/vcs_example/vcs_example_01.pdf}
+ \end{center}
+\end{pframe} 
+
+\begin{pframe}
+ \begin{center}
+  \includegraphics[width=1\textwidth]{images/vcs_example/vcs_example_02.pdf}
+ \end{center}
+\end{pframe} 
+
+\begin{pframe}
+ \begin{center}
+  \includegraphics[width=1\textwidth]{images/vcs_example/vcs_example_03.pdf}
+ \end{center}
+\end{pframe} 
+
+\begin{pframe}
+ \begin{center}
+  \includegraphics[width=1\textwidth]{images/vcs_example/vcs_example_04.pdf}
+ \end{center}
+\end{pframe} 
+
+\begin{pframe}
+ \begin{center}
+  \includegraphics[width=1\textwidth]{images/vcs_example/vcs_example_05.pdf}	
+ \end{center}
+\end{pframe} 
+
+\begin{pframe}
+ \begin{center}
+  \includegraphics[width=1\textwidth]{images/vcs_example/vcs_example_06.pdf}
+ \end{center}
+\end{pframe} 
+
+\begin{pframe}
+ \begin{center}
+  \includegraphics[width=1\textwidth]{images/vcs_example/vcs_example_07.pdf}
+ \end{center}
+\end{pframe} 
+
+\begin{pframe}
+ \begin{center}
+  \includegraphics[width=1\textwidth]{images/vcs_example/vcs_example_08.pdf}
+ \end{center}
+\end{pframe} 
+
+\begin{pframe}
+ \begin{center}
+  \includegraphics[width=1\textwidth]{images/vcs_example/vcs_example_09.pdf}
+ \end{center}
+\end{pframe} 
+
+\begin{pframe}
+  General features:   
+  \begin{itemize}     
+    \item Keep track of your files in an orderly manner.
     \begin{itemize}
-      \item Hiding old versions.
-      \item Recording who made changes and when.
+      \item Hide old versions.
+      \item Check the differences between current and older versions.
+      \item Record who made changes and when.
     \end{itemize}
     \item Enables collaboration.
   \end{itemize}
-\end{pframe}
+\end{pframe} 
 
+\subsection{Why should I use it?}
 \begin{pframe}
-  \begin{figure}[]
-    \begin{center}
-      \fbox{
-        \includegraphics[height=0.7\textheight]{project_tree}
-      }
-    \end{center}
-    \caption{``I have my own system.''}
-  \end{figure}
+  For a single user:
+  \begin{itemize} 
+   \item Revert files to a previous state.
+   \item Revert the entire project back to a previous state.
+   \item Review changes made over time.
+   \item Backup.
+  \end{itemize}
+  \pause
+  For multiple users:
+    \begin{itemize}
+     \item A reliable way to share files between people/computers.
+     \item Allow multiple people working on the same project at the same time.
+     \item Conflict resolution.
+     \item See who made which changes at which time.
+    \end{itemize}
 \end{pframe}
 
-\subsection{Why should I use it?}
+\subsection{Why should I not use version control?}
 \begin{pframe}
-  For a single user:
+  \bigskip
+  
   \begin{itemize}
-    \item Revert files to a previous state.
-    \item Revert the entire project back to a previous state.
-    \item Review changes made over time.
-    \item Backup.
+    \item I have my own system.
   \end{itemize}
-  \bigskip
   \pause
+  \begin{tikzpicture}[remember picture,overlay]
+    \node[xshift=-3.4cm,yshift=-5.4cm] at (current page.north east) {\includegraphics[width=6cm]{images/project_tree.pdf}};
+  \end{tikzpicture}
+\end{pframe}
 
-  For multiple users:
+\begin{pframe}
+  A list of common excuses:
   \begin{itemize}
-    \item A reliable way to share files between people/computers.
-    \item Allow multiple people working on the same project at the same time.
-    \item Conflict resolution.
-    \item See who made which changes at which time.
+    \item I have my own system.
+    \item It is too much work.
+    \item I am the only one working \\ on this project.
+    \item This code will not be \\ used by anyone else.
+    \item The bugs can be \\ tracked forever.
+    \item \ldots
   \end{itemize}
+  
+  \begin{tikzpicture}[remember picture,overlay]
+    \node[xshift=-3.4cm,yshift=-5.4cm] at (current page.north east) {\includegraphics[width=6cm]{images/project_tree.pdf}};
+  \end{tikzpicture}
 \end{pframe}
 
-\subsection{Why should I not use it?}
 \begin{pframe}
   A list of common excuses:
   \begin{itemize}
-    \item It is too much work.
     \item I have my own system.
-    \item I am the only one working on this project.
-    \item This code will not be used by anyone else.
-    \item The bugs can be tracked forever.
+    \item It is too much work.
+    \item I am the only one working \\ on this project.
+    \item This code will not be \\ used by anyone else.
+    \item The bugs can be \\ tracked forever.
     \item \ldots
   \end{itemize}
-  \bigskip
-  \pause
-
+  
   Eventually leading to:
   \begin{itemize}
     \item I'm too busy rewriting the code I accidentally deleted.
   \end{itemize}
+  \begin{tikzpicture}[remember picture,overlay]
+    \node[xshift=-3.8cm,yshift=-5.6cm] at (current page.north east) {\includegraphics[width=7cm]{images/desperate.pdf}};
+  \end{tikzpicture}
 \end{pframe}
 
+
 \subsection{Local repository}
 \begin{pframe}
   \begin{figure}[]