\documentclass{beamer}
\usepackage[latin1]{inputenc}

\usetheme{PaloAlto}
\usecolortheme{beetle}

\title{}
%\author{}
%\institute{}
\date{}

\begin{document}

\begin{frame}
\titlepage
\end{frame}

\begin{frame}{Title 1}

\begin{itemize}
  \item item 1
  \item item 2
  \item item 3
  \item item 4
\end{itemize}


\end{frame}


\begin{frame}{Title 2}

\begin{itemize}
  \item item 1
  \item item 2
  \item item 3
  \item item 4
\end{itemize}
\end{frame}


\begin{frame}{title 3}


It doesn't have to be itemized

Normal paragraphs are okay, too.

% \begin{itemize}
%   \item 
%   \item 
%   \item 
%   \item 
% \end{itemize}

\end{frame}



% use this for pictures
%\begin{figure}
%   \includegraphics[width= 0.25\linewidth]{images/image-file.png}
%\end{figure}



\end{document}