LaTeX: Frequent Use Packages

This is a list of frequently use packages:
(Usage: Insert \usepackage{package} before \begin{document})

anysize: Set margins

\marginsize{l}{r}{t}{b}

\multicol: Use n columns

\begin{multicols}{n}

graphicx: For displaying images

\includegraphics[width=3cm]{filename}
\includegraphics[width=0.50textwidth]{filename}

url: To insert URL

\url{http://rizauddin.com}