The documentation is a good starting point and for beamer it is self explanatory as well. If you are using Linux open up the terminal else in Windows open the Command Prompt and type texdoc beamer. The documentation file will be displayed. Its a good starting point. To start off:
Beamer class is used to generate slides for presentation purposes. There is another class named slides but, beamer has more features and widely used. A sample document will look like this:
\documentclass{beamer}
\title{Introduction to Beamer}
\author{Subham Soni S.}
\date{\today}
\begin{document}
\begin{frame}
\maketitle
\end{frame}
\begin{frame}{Table of Contents}
\tableofcontents
\end{frame}
\begin{frame}{This is my first slide} %The second argument is title of the frame
\section{First slide} %This is used to make the title appear in the Table of Contents - Note:- Not Necessary that the frame title and Section title should be same.
Hello Everyone. You are viewing the \emph{first} slide.
\end{frame}
\begin{frame}{This is my second slide}
\section{Second slide}
Hello Everyone. You are viewing the \emph{second} slide.
\end{frame}
\end{document}
An Introduction to LaTeXinbeamerstyle inTeXformat so that I don't have to typeAn Introduction to LaTeXinbeamer. – MYaseen208 Mar 06 '14 at 15:02beamerclass, so you don't have to write it but can still modify it? Then your question would not be a duplicate, but I am not sure it belongs here either (it is not a TeX question, it is a "make-my-life-easier" one). Why can't you just take an existing presentation and state it as not being your own? – ienissei Mar 06 '14 at 16:54