Insert multiple figures in Latex

Below is how to insert two figures. Pls adapt this as per your needs. You need subcaption package.

\documentclass{article}
\usepackage[demo]{graphicx}
\usepackage{subcaption}
\begin{document}
\begin{figure}
\begin{subfigure}{.5\textwidth}
  \centering
  \includegraphics[width=.8\linewidth]{image1}
  \caption{1a}
  \label{fig:sfig1}
\end{subfigure}%
\begin{subfigure}{.5\textwidth}
  \centering
  \includegraphics[width=.8\linewidth]{image2}
  \caption{1b}
  \label{fig:sfig2}
\end{subfigure}
\caption{plots of....}
\label{fig:fig}
\end{figure}
\end{document}

Refer this for information about another method http://texblog.org/2011/05/24/placing-figures-side-by-side-subfig/

This is also similar to what you are looking for - how to put subfigures in several rows

Instead of you using two environments-subfig and figure, you can just use figure and subfloat

\documentclass{article}
\usepackage{float}
\usepackage[caption = false]{subfig}
\usepackage[demo]{graphicx}
\begin{document}
\begin{figure}
\subfloat[fig 1]{\includegraphics[width = 3in]{something}} 
\subfloat[fig 2]{\includegraphics[width = 3in]{something}}\\
\subfloat[fig 3]{\includegraphics[width = 3in]{something}}
\subfloat[fig 4]{\includegraphics[width = 3in]{something}} 
\caption{Add your own figures before compiling}
\label{some example}
\end{figure}
\end{document}

After every two figures add \\ or adjust the width so that only two figures fit side by side.

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Please change

\usepackage[demo]{graphicx} 

to

\usepackage[final]{graphicx}

to see your actual images (instead you will always see black boxes.