\documentclass[12pt]{article}

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\title{My very first article in \LaTeX}
\author{Nicolas Fressengeas}

\begin{document}

\maketitle

\begin{abstract}
This is my very first article in \LaTeX. I will thus try to keep this abstract short
\end{abstract}

An introductory material can come before the first section

\section{\LaTeX\  is so great}

I love using \LaTeX. That is the reason why this section is named this way.

\section{Make the students understand it}

There is simply no other way to write, or beam, science. May my students understand this after this class !

\section{Conclusion}

This is nearing to the end of the first part of this class dedicated to tools. Now is the time to practice, before going into more scientific details.

\end{document}
