Example of a simple beamer code

example.tex

\documentclass{beamer}


\usecolortheme{wolverine}
\useinnertheme{circles}
\useoutertheme{infolines}
\usefonttheme{default}

\title[Short title]{
  Title
}

\author[Short author name]{
  Author's name
}

\institute[Short name of inst.]{
   Name of institution
}

\begin{document}

\begin{frame}[plain]
  \maketitle
\end{frame}

\section[Short name of section]{Name of Section}
\subsection[Short name of subsection]{Name of Subsection}


\frame
{
  \frametitle{Frame title}

  Itemize
  \begin{itemize}
  \item Item
 \end{itemize}

 Enumerate
 \begin{enumerate}
   \item Item
   \end{enumerate}

   \begin{block}{Block name}
     Block
   \end{block}
   
}

\end{document}