\usepackage{hyperref}
For further references see \href{http://www.sharelatex.com}{Something Linky}
or go to the next url: \url{http://www.sharelatex.com}\documentclass{book}
\usepackage{hyperref}
\hypersetup{
colorlinks=true,
linkcolor=blue,
filecolor=magenta,
urlcolor=cyan,
pdftitle={Overleaf Example},
pdfpagemode=FullScreen,
}
\urlstyle{same}
\documentclass{article} % or any other documentclass
%...
\usepackage{hyperref}
%...
\begin{document}
%...
\end{document}