Creating Your First LaTeX Project

\documentclass[12pt, a4paper]{article}

% Preamble - Package imports and settings
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[english]{babel}
\usepackage{amsmath, amssymb, amsthm}
\usepackage{graphicx}
\usepackage[margin=1in]{geometry}
\usepackage{hyperref}

% Document metadata
\title{My First LaTeX Document}
\author{Your Name}
\date{\today}

% Document content
\begin{document}

\maketitle

\begin{abstract}
This is my first LaTeX document, demonstrating the basic structure
and common elements used in academic writing.
\end{abstract}

\tableofcontents
\newpage

\section{Introduction}
Welcome to LaTeX! This document will help you understand the basics
of document creation and formatting.

\section{Getting Started}
Let's explore the fundamental concepts and features of LaTeX.

\subsection{Why Use LaTeX?}
LaTeX offers several advantages:
\begin{itemize}
    \item Professional typesetting
    \item Excellent mathematical notation
    \item Automatic numbering and references
    \item Consistent formatting
\end{itemize}

\section{Conclusion}
You've successfully created your first LaTeX document!

\end{document}

% Essential packages for any document
\usepackage[utf8]{inputenc}          % Input encoding
\usepackage[T1]{fontenc}             % Font encoding
\usepackage[english]{babel}          % Language support
\usepackage{geometry}                % Page layout
\usepackage{graphicx}                % Images
\usepackage{hyperref}                % Clickable links

% Math and science
\usepackage{amsmath, amssymb}        % Math symbols and environments
\usepackage{siunitx}                 % SI units

% Tables and lists
\usepackage{booktabs}                % Professional tables
\usepackage{enumitem}                % List customization

% References and citations
\usepackage{biblatex}                % Bibliography
\addbibresource{references.bib}      % Bibliography file

\section{Text Formatting Examples}

% Basic formatting
This is \textbf{bold text}, \textit{italic text}, and \underline{underlined text}.
You can also combine them: \textbf{\textit{bold italic}}.

% Font sizes
{\tiny tiny} {\small small} {\normalsize normal} {\large large} {\huge huge}

% Emphasis and quotes
\emph{Emphasized text} adapts to context. Use ``double quotes'' for quotations.

% Paragraph formatting
\paragraph{Named paragraph} This creates a named paragraph with special formatting.

% Line breaks and spacing
First line\\
Second line with forced break

First paragraph.

Second paragraph with extra spacing.

% Bullet points
\begin{itemize}
    \item First item
    \item Second item
    \begin{itemize}
        \item Nested item
        \item Another nested item
    \end{itemize}
    \item Third item
\end{itemize}

% Numbered lists
\begin{enumerate}
    \item First step
    \item Second step
    \item Third step
\end{enumerate}

% Description lists
\begin{description}
    \item[LaTeX] A document preparation system
    \item[PDF] Portable Document Format
    \item[BibTeX] Bibliography management tool
\end{description}

% Custom lists with enumitem
\usepackage{enumitem}
\begin{enumerate}[label=(\alph*)]
    \item First item with (a)
    \item Second item with (b)
\end{enumerate}

\section{Working with Images}

% Simple image inclusion
\begin{figure}[htbp]
    \centering
    \includegraphics[width=0.8\textwidth]{example-image}
    \caption{A sample image with descriptive caption}
    \label{fig:example}
\end{figure}

% Multiple images side by side
\begin{figure}[htbp]
    \centering
    \begin{subfigure}{0.45\textwidth}
        \includegraphics[width=\textwidth]{image1}
        \caption{First image}
    \end{subfigure}
    \hfill
    \begin{subfigure}{0.45\textwidth}
        \includegraphics[width=\textwidth]{image2}
        \caption{Second image}
    \end{subfigure}
    \caption{Two images side by side}
    \label{fig:comparison}
\end{figure}

As shown in Figure~\ref{fig:example}, images can be easily referenced.

\section{Tables}

% Simple table
\begin{table}[htbp]
    \centering
    \caption{Sample data table}
    \label{tab:sample}
    \begin{tabular}{lcc}
        \toprule
        Item & Quantity & Price \\
        \midrule
        Apples & 5 & \$2.50 \\
        Oranges & 3 & \$1.80 \\
        Bananas & 6 & \$3.00 \\
        \bottomrule
    \end{tabular}
\end{table}

Table~\ref{tab:sample} shows a professional table using booktabs.

\section{Mathematical Expressions}

% Inline math
The quadratic formula is $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$.

% Display equation with number
\begin{equation}
    E = mc^2
    \label{eq:einstein}
\end{equation}

% Multiple aligned equations
\begin{align}
    f(x) &= x^2 + 2x + 1 \\
         &= (x + 1)^2
\end{align}

% Matrices
\begin{equation}
    A = \begin{bmatrix}
        1 & 2 & 3 \\
        4 & 5 & 6 \\
        7 & 8 & 9
    \end{bmatrix}
\end{equation}

As shown in Equation~\ref{eq:einstein}, mass and energy are related.

% In preamble
\usepackage{biblatex}
\addbibresource{references.bib}

% In document
\section{Literature Review}

According to \textcite{knuth1984}, TeX is a typesetting system.
The LaTeX system \parencite{lamport1994} builds upon TeX.
Recent developments are discussed in \cite{modern2023}.

% At document end
\printbibliography

\documentclass{report}
% ... preamble ...

\begin{document}

\include{chapters/intro}
\include{chapters/methods}
\include{chapters/results}

\printbibliography

\end{document}

\documentclass[12pt, a4paper]{article}

% ==================
% PREAMBLE
% ==================
% Encoding and fonts
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}

% Language
\usepackage[english]{babel}

% Page layout
\usepackage[margin=1in]{geometry}
\usepackage{setspace}
\onehalfspacing

% Graphics and color
\usepackage{graphicx}
\usepackage[dvipsnames]{xcolor}

% Math packages
\usepackage{amsmath, amssymb, amsthm}

% Tables
\usepackage{booktabs}
\usepackage{array}

% References
\usepackage{hyperref}
\hypersetup{
    colorlinks=true,
    linkcolor=blue,
    citecolor=green,
    urlcolor=red
}

% Bibliography
\usepackage{biblatex}
\addbibresource{references.bib}

% Custom commands
\newcommand{\R}{\mathbb{R}}
\newcommand{\important}[1]{\textcolor{red}{\textbf{#1}}}

% Theorem environments
\newtheorem{theorem}{Theorem}[section]
\newtheorem{lemma}[theorem]{Lemma}

% Document info
\title{A Complete LaTeX Project Example}
\author{Your Name\\
\small Department of Computer Science\\
\small University Name}
\date{\today}

% ==================
% DOCUMENT BODY
% ==================
\begin{document}

\maketitle

\begin{abstract}
This document demonstrates a complete LaTeX project structure,
including all common elements used in academic writing. It serves
as a template for creating professional documents.
\end{abstract}

\tableofcontents
\newpage

\section{Introduction}
\label{sec:intro}

LaTeX is a powerful typesetting system particularly suited for
technical and scientific documentation. This document demonstrates
its capabilities through practical examples.

\subsection{Motivation}
The motivation for using LaTeX includes:
\begin{itemize}
    \item Superior mathematical typesetting
    \item Consistent document formatting
    \item Excellent bibliography management
    \item Cross-platform compatibility
\end{itemize}

\section{Mathematical Content}
\label{sec:math}

\subsection{Equations}
The quadratic equation \cite{mathbook2020} is given by:
\begin{equation}
    ax^2 + bx + c = 0
    \label{eq:quadratic}
\end{equation}

The solutions to Equation~\eqref{eq:quadratic} are:
\begin{equation}
    x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}
\end{equation}

\subsection{Theorems}
\begin{theorem}[Pythagorean Theorem]
\label{thm:pythagoras}
In a right triangle with legs $a$ and $b$ and hypotenuse $c$:
\begin{equation}
    a^2 + b^2 = c^2
\end{equation}
\end{theorem}

\begin{proof}
The proof follows from geometric considerations...
\end{proof}

\section{Tables and Figures}
\label{sec:visual}

\subsection{Tables}
Table~\ref{tab:results} shows experimental results.

\begin{table}[htbp]
    \centering
    \caption{Experimental results}
    \label{tab:results}
    \begin{tabular}{lccc}
        \toprule
        Method & Accuracy & Precision & Recall \\
        \midrule
        Baseline & 0.85 & 0.82 & 0.88 \\
        Improved & 0.92 & 0.90 & 0.94 \\
        \important{Proposed} & \important{0.96} & \important{0.95} & \important{0.97} \\
        \bottomrule
    \end{tabular}
\end{table}

\subsection{Figures}
Figure~\ref{fig:example} shows an example image.

\begin{figure}[htbp]
    \centering
    \includegraphics[width=0.6\textwidth]{example-image}
    \caption{Example figure with caption}
    \label{fig:example}
\end{figure}

\section{Code Listings}
\label{sec:code}

Here's an example algorithm:

\begin{verbatim}
def fibonacci(n):
    if n <= 1:
        return n
    return fibonacci(n-1) + fibonacci(n-2)
\end{verbatim}

\section{Conclusion}
\label{sec:conclusion}

This document has demonstrated the essential elements of a LaTeX
project. For more information, see \cite{latex2023}.

\printbibliography

\appendix
\section{Additional Resources}
\begin{itemize}
    \item Official LaTeX documentation
    \item TeX Stack Exchange
    \item LaTeX Wikibook
\end{itemize}

\end{document}