\documentclass[12pt,oneside,final]{article}
% preamble
\usepackage{graphicx}
\usepackage{indentfirst}
\usepackage{setspace}
\usepackage[longnamesfirst]{natbib}
\usepackage{booktabs}
\usepackage{rotating}
\usepackage{amsmath}
\usepackage[margin = .75in]{geometry}
\usepackage{url}
\usepackage{subfig}
\captionsetup[subfloat]{position = top, font = large}
\usepackage{float}
\bibpunct{(}{)}{;}{a}{}{,}
\parskip = 3pt
\usepackage[colorlinks = TRUE, urlcolor = blue, linkcolor = black,
citecolor = blue]{hyperref}
\usepackage{fancyhdr}
\pagestyle{fancy}
\fancyhf{}
\rfoot{\thepage}
\renewcommand{\headrulewidth}{0pt}
\usepackage{color}
\usepackage{endnotes}
\let\footnote = \endnote




\begin{document}


\title{Introduction to \LaTeX}
\author{Tom Roche
\thanks{Thanks, Janet!} \\
Department of Environmental Sciences and Engineering \\
University of North Carolina at Chapel Hill \\
\url{Tom_Roche@pobox.com}
}
\date{\today}

\maketitle

\begin{abstract}
This is the abstract for our paper.
\end{abstract}

hello world!

\end{document}