two useful online tools

an online free tool for merging multiple pdf files into one: http://foxyutils.com/mergepdf/

an online image conversion tool: http://www.go2convert.com/

numbered list in Latex

Here is a way of creating numbered lists in Latex:



\begin{enumerate}
\item bla
\begin{enumerate}
\item bla bla
\item bla bla bla
\end{enumerate}
\item bla bla bla bla
\item bla bla bla bla bla 
\end{enumerate}