\documentstyle[12pt]{article}

\title{Use Figure}
\author{Atsushi Sakaguchi}
\date{30 May, 2001}

\begin{document}

\maketitle

This is an example of FIGURE.  
\LaTeX can allocate space for a figure easily.  

\begin{figure}
    \vspace{3cm}
    \caption{This is a space for figure created by \LaTeX.}
    \label{ABC}
\end{figure}

The figure can be referred as Fig. \ref{ABC}.

\end{document}