\documentclass[12pt]{article} 
% most common classes: article, report, book, scrartcl, scrreprt, scrbook
% available options, e.g.: oneside, twoside

% Some document metadata:
\title{My document's title}
\date{2021}
\author{Jane Doe}

% Include some extra packages:
\usepackage{natbib}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{xcolor}
\definecolor{my_blue}{RGB}{0, 115, 207}
\setlength{\parindent}{0pt} % disable text indentation
\usepackage[colorlinks,linkcolor=cyan,citecolor=magenta]{hyperref}
\usepackage{graphicx}


\begin{document}
\maketitle

% add a table of contents:
\tableofcontents

% add a list of figures:
\listoffigures
\addcontentsline{toc}{section}{List of Figures}
%\addcontentsline{toc}{chapter}{List of Figures}

% add a list of tables:
\listoftables
\addcontentsline{toc}{section}{List of Tables}
%\addcontentsline{toc}{chapter}{List of Tables}

%\clearpage
\newpage




%\chapter{Chapter Title} % not available in "article" classes
\section{Section Title} \label{sec:section01}

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce et erat eget mauris semper aliquam in non nulla. Quisque a velit semper, varius lacus at, egestas ante. Morbi aliquam viverra elit eu volutpat. Aliquam in rhoncus massa. Quisque euismod interdum urna in viverra. Morbi molestie euismod purus mattis ultricies. In quis lobortis massa, eu imperdiet dolor. Sed ultricies odio at dui varius, vitae bibendum sapien vestibulum. Duis accumsan, justo malesuada ullamcorper vestibulum, lorem metus fringilla quam, quis adipiscing purus quam non metus. Ut posuere tincidunt tellus, non volutpat mi sagittis eget. Sed nisi justo, placerat nec condimentum sed, malesuada id lectus. Proin at nibh elit.

\subsection{Subsection A}
Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Etiam in vulputate orci. Proin sit amet urna augue. Cras nisl arcu, ullamcorper sollicitudin dui a, imperdiet lobortis libero. Donec feugiat fringilla nulla, vitae egestas enim iaculis at. Nulla nec tincidunt justo. Donec condimentum dolor est, ut molestie urna luctus in. 

\subsection{Subsection B}
I am part of Section \ref{sec:section01}.

\paragraph{Paragraph} Lorem....

\subparagraph{Subparagraph} Lorem....



\section{Equations}

Default equation:
\begin{equation}
  E=\frac{1}{2}nk_BT
\end{equation}

Equation without numbering:
\begin{equation*}
  E=\frac{1}{2}nk_BT
\end{equation*}


Eqnarray:
\begin{eqnarray}
  E_{kin} &=& E_{pot} \\
  \Leftrightarrow   \frac{1}{2} m v^2 &=& \frac{GMm}{r}  \\
  \Leftrightarrow   v  &=& \sqrt{ 2 \frac{GM}{r}} := v_{escape}
\end{eqnarray}

Align:
\begin{align}
  E_{kin} &= E_{pot} \\
  \Leftrightarrow \frac{1}{2} m v^2 &= \frac{GMm}{r}  \\
  \Leftrightarrow v  &= \sqrt{ 2 \frac{GM}{r}} := v_{escape}
\end{align}


\section{Text Formatting}
\begin{itemize}
	\item This is \textbf{bold}.	
	\item This is \textit{italicized}.
	\item This is \underline{underlined}.
	\item This is \emph{emphasized}.	
	\item This is \texttt{typewriter family}.	
	\item This is \textrm{Roman font family}.	
	\item This is \textsf{sans serif font}.
	\item  $x=10 \text{, while} \; y=7$
	\item $\mathbb{R}$, $\mathbf{R}$
\end{itemize} 

\subsection{Font Sizes}
\begin{itemize}
	\item {\tiny tiny}
	\item {\scriptsize scriptsize}
	\item {\footnotesize footnotesize}
	\item {\small small}
	\item {\normalsize normalsize}
	\item {\large large}
	\item {\Large Large}
	\item {\LARGE LARGE}
	\item {\huge huge}
	\item {\Huge Huge}
\end{itemize} 


\subsection{Font Color}
This is \textcolor{red}{my text in \textbf{red}}. This is  \textcolor{my_blue}{my color}.



\subsection{Text alignment}

\begin{center}
	centered text
\end{center} 

\begin{flushleft}
	left aligned text
\end{flushleft} 

\begin{flushright}
	right aligne text
\end{flushright}

\newpage
top text \vfill bottom text
left text \hfill right text

\newpage

This is some extra space.\\
This is some extra \! space.\\
This is some extra \, space.\\
This is some extra \: space.\\
This is some extra \; space.\\
This is some extra \quad space. \\
This is some extra \qquad space. \\
This is some extra \hspace{1cm} space.



\subsection{Horizontal lines}

\rule{\textwidth}{0.5pt}


\section{Cross Referencing}
\begin{equation}
  E=\frac{1}{2}nk_BT \label{eq:my_equation_xy}
\end{equation}

As you can see in Equation \ref{eq:my_equation_xy}, ...

In Figure \ref{fig:my_label} ...

In Table \ref{tab:my_label} ...

In Section \ref{sec:section01} ...


\section{Lists}

Unordered lists:
\begin{itemize}
	\item entry 1
	\item entry 2
\end{itemize}


Unordered list with description:
\begin{description}
   \item[keyword 1]: description text 1
   \item[keyword 2]: description text 2
\end{description}


Ordered lists:
\begin{enumerate}
	\item entry 1
	\item entry 2
\end{enumerate}


\clearpage

\section{Images}

\begin{figure}[h]
 \begin{center}
  \includegraphics[width=.25\textwidth]{pixel_tracker_logo_120px.jpg}
  \caption{Optional image caption.}
  \label{fig:my_label}
 \end{center}
\end{figure}


\section{Tables}

\begin{table}[!h]
  \centering
    \caption{Optional table caption.}
    \begin{tabular}{l|c}
      \textbf{1st column} & \textbf{2nd column}\\ \hline\hline
      row 1 & \textit{entry 1.1} \vline \; \textit{entry 1.2} \\\hline
      row 2 & \textit{entry 2} \\\hline\hline
    \end{tabular}
    \label{tab:my_label}
\end{table}


\begin{table}[!h]
  \centering
    \caption{Optional table caption.}
    \begin{tabular}{c|l|r}
      \textbf{1st column} & \textbf{2nd column} & \textbf{3rd column}\\ \hline
      row 1 & \textit{entry 1} & number 1\\ \hline
      \multicolumn{2}{c|}{\textbf{entry 2}} & number 2\\ \hline
      row 3 & \textit{entry 3} & number 3\\
    \end{tabular}
    \label{tab:my_label2}
\end{table}



\section{Bibliography}
We cite \cite{Gurnett2007}...and \cite{Leclercq2016}. As we shown \citep{Gurnett2007}, ....



%\part{Appendix} % not available in "article" classes
% bibliography:
\bibliographystyle{plainnat}
\bibliography{BibTeX.bib}
\addcontentsline{toc}{section}{References}
%\addcontentsline{toc}{chapter}{References}



\end{document}