main.tex

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{hyperref}

\title{My first LaTeX handout}
\author{Puspal Paul}
\date{11th January, 2022}

\begin{document}

\maketitle

\section{Introduction}
\\Hello everyone, this is my first LaTeX writing project, I am grateful to all my friends (especially Harshit Gupta and Aditya) for introducing to this platform, Overleaf. 

\\You can also learn LaTeX and make new handouts in LaTeX !! Do try and inform your experiences if you like !!\emoji{smiley}
\maketitle

\section{Preamble of my LaTeX career}
\\First of all, I will use LaTeX to make math handouts primarily so I will include some of  text and some of equations and variables so that the whole text becomes pretty......

\maketitle

\section{A math problem}
Here is a math problem which you can try if you are like!! No issues with that, but you have been warned - 
\\If the problem is unsolvable, leave it immediately !! It's just made for fun:))  
\begin{displaymath}
    \lim_{k\rightarrow \infty} \sum_{r=0}^{k-1} \int_{r}^{r+1} \frac{sin^{3}x}{x}dx
\end{displaymath}

\maketitle
\section{And a song: I like it a lot !!} 

\href{https://www.youtube.com/watch?v=GMGD-C6j0U8}{Mann Mera by Jalraj (latest cover 2020)}

\maketitle
\section{And that's it !! Ciao !!}
\end{document}