how to use landscape document mode

 \usepackage[landscape]{geometry}

\documentclass[landscape,twocolumn,letterpaper]{article}

 some more hints at

http://texblog.org/2007/11/10/landscape-in-latex/ 

How to put two figures next to each other

Use the minipage command, and the epsfig package e.g.

\begin{figure}[h]
  \hfill
  \begin{minipage}[t]{.45\textwidth}
    \begin{center}  
      \epsfig{file=figure1.eps, scale=0.5}
      \caption{figure 1}
      \label{fig-tc}
    \end{center}
  \end{minipage}
  \hfill
  \begin{minipage}[t]{.45\textwidth}
    \begin{center}  
      \epsfig{file=figure2.eps, scale=0.5}
      \caption{figure 2}
      \label{fig-tc}
    \end{center}
  \end{minipage}
  \hfill
\end{figure}

This, and other possible ways to put figures next to each other can be found here:
http://www.cse.iitd.ernet.in/~bagchi/latex-tips.html

How to write new line in LaTeX

Many LaTeX user (as myself in the past) think that the form of new line is to write

\\

Well, it works, bit it is actually not new line, but starting a new paragraph
The correct notation for new line (but not new paragraph) is

\\*

A more detailed description with many other possibilities to write new line new paragraph, new page is available at
http://www.personal.ceu.hu/tex/breaking.htm#newline