Creating sections each with title pages in beamers slides

I was looking at the same thing, and the following outline can be also useful.

documentclass[english]{beamer}
usepackage{lmodern}
renewcommand{sfdefault}{lmss}
renewcommand{ttdefault}{lmtt}
usepackage[T1]{fontenc}
usepackage{amsmath}
usepackage{amssymb}

makeatletter
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Textclass specific LaTeX commands.
% this default might be overridden by plain title style
newcommandmakebeamertitle{frame{maketitle}}%
% (ERT) argument for the TOC
AtBeginDocument{%
  letorigtableofcontents=tableofcontents
  deftableofcontents{@ifnextchar[{origtableofcontents}{gobbletableofcontents}}
  defgobbletableofcontents#1{origtableofcontents}
}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% User specified LaTeX commands.
usetheme{Warsaw}
% or ...

setbeamercovered{transparent}
% or whatever (possibly just delete it)

makeatother

usepackage{babel}
begin{document}
title[Short Paper Title]{Title As It Is In the Proceedings}
subtitle{Include Only If Paper Has a Subtitle}
author[Author, Another]{F.~Authorinst{1} and S.~Anotherinst{2}}
institute[Universities of Somewhere and Elsewhere]{inst{1}Department of Computer Science
University of Somewhereand inst{2}Department of Theoretical Philosophy
University of Elsewhere}
date[CFP 2003]{Conference on Fabulous Presentations, 2003}

makebeamertitle

%pgfdeclareimage[height=0.5cm]{institution-logo}{institution-logo-filename}
%logo{pgfuseimage{institution-logo}}

AtBeginSubsection[]{%
  frame<beamer>{ 
    frametitle{Outline}   
    tableofcontents[currentsection,currentsubsection] 
  }
}

%beamerdefaultoverlayspecification{<+->}
begin{frame}{Outline}

tableofcontents{}

end{frame}

section{Motivation}

subsection[Basic Problem]{The Basic Problem That We Studied}
begin{frame}{Make Titles Informative. Use Uppercase Letters.}

framesubtitle{Frame subtitles are optional. Use upper- or lowercase letters.}
begin{itemize}
item Use Itemize a lot.

pause{}
item Use very short sentences or short phrases.

pause{}
item These overlays are created using the Pause style.
end{itemize}
end{frame}
%
begin{frame}{Make Titles Informative. }
begin{itemize}
item<1-> You can also use overlay specifications to create overlays.
item<3-> This allows you to present things in any order.
item<2-> This is shown second.
end{itemize}
end{frame}
%
begin{frame}{Make Titles Informative.}
begin{block}<1->{}
begin{itemize}
item Untitled block.
item Shown on all slides.
end{itemize}
end{block}
begin{exampleblock}<2->{Some Example Block Title}
begin{itemize}
item $e^{ipi}=-1$.
item $e^{ipi/2}=i$.
end{itemize}
end{exampleblock}
end{frame}

subsection{Previous Work}
begin{frame}{Make Titles Informative. }
begin{example}<1->
On first slide. 
end{example}

begin{example}<2->
On second slide.
end{example}

end{frame}

section{Our Results/Contribution}

subsection{Main Results}
begin{frame}{Make Titles Informative. }
begin{theorem}
On first slide.
end{theorem}


pause{}
begin{corollary}
On second slide.
end{corollary}

end{frame}
%
begin{frame}{Make Titles Informative. }
begin{columns}[t]

column{5cm}
begin{theorem}<1->
In left column.
end{theorem}


column{5cm}
begin{corollary}<2->
In right column.
New line
end{corollary}

end{columns}

end{frame}

subsection{Basic Ideas for Proofs/Implementations}

section*{Summary}
begin{frame}{Summary}
begin{itemize}
item The alert{first main message} of your talk in one or two lines.
item The alert{second main message} of your talk in one or two lines.
item Perhaps a alert{third message}, but not more than that.
end{itemize}
medskip{}

begin{itemize}
item Outlook
begin{itemize}
item What we have not done yet.
item Even more stuff.
end{itemize}
end{itemize}
end{frame}

appendix

section*{Appendix}

subsection*{For Further Reading}
begin{frame}[allowframebreaks]{For Further Reading}

beamertemplatebookbibitems
begin{thebibliography}{1}
bibitem{Author1990}A. Author. newblockemph{Handbook of Everything}.newblock
Some Press, 1990.beamertemplatearticlebibitems

bibitem{Someone2002}S. Someone.newblock On this and thatemph{.}
newblockemph{Journal on This and That}. 2(1):50textendash 100,
2000.
end{thebibliography}
end{frame}

end{document}