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\input{preamble}
\usepackage[pdftex, pdftitle={Article}, pdfauthor={Author}]{hyperref} % For hyperlinks in the PDF
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\begin{document}
\title{My Title}
\author{Author}
\email[Correspondence email address: ]{email@institution.com}% Your name
\affiliation{University of São Paulo, Institute of Physics, São Paulo, SP, Brazil}
\date{\today} % Leave empty to omit a date
\begin{abstract}
\lipsum[1]
\end{abstract}
\keywords{first keyword, second keyword, third keyword}
\maketitle
\input{sections/section01.tex} %I believe leaving the sections in separate files is more organized, change it if you desire
\input{sections/section02.tex}
\input{sections/section03.tex}
\input{sections/acknowledgements.tex}
\begin{thebibliography}{4}
\bibitem{Griffiths}
D. J. Griffiths,
\textit{Introduction to Electrodynamics}
(Cambridge University Press, Cambridge, 2017).
\bibitem{Fleming}
A. Bobrinha,
Revista Brasileira de Lorem Ipsum \textbf{23},
179 (2002).
\bibitem{Feynman}
R. P. Feynman, R. B. Leighton and M. Sands,
\textit{Lições de Física de Feynman}
(Editora Bookman, Porto Alegre, 2008).
\bibitem{Jackson-CE}
J. D. Jackson,
\textit{Classical Electrodynamics}
(John Wiley \& Sons, Danvers, 1999).
\end{thebibliography}
\appendix*
\input{sections/appendix1.tex}
\end{document}
