Pronunciation
LaTeX is pronounced "Lah-tech" with a German "ch" (rhymes with "Blech" or "Bertolt Brecht"). An introduction to LaTeX, Wikipedia Pronunciation
Basic structure
\documentclass{article}
\title{Important Article}
\author{My Name}
\date{\today}
\begin{document}
\maketitle
\section{First Section}
Hello world from \LaTeX!
\end{document}