Code for theme

I am currently using a theme for a website (http://www.rkh-images.com/) and have never used WordPress before. I have no idea where to get the coding to input on the index page where I want the theme and information to show up.

Currently, this is what comes up when I view the code on the index page. I know it’s something small I am missing and it is driving me nuts. If someone could just point me in the right direction it would be GREATLY appreciated.

<?php
/**
* Front to the WordPress application. This file doesn’t do anything, but loads
* wp-blog-header.php which does and tells WordPress to load the theme.
*
* @package WordPress
*/

/**
* Tells WordPress to load the WordPress theme and output it.
*
* @var bool
*/
define(‘WP_USE_THEMES’, true);

/** Loads the WordPress Environment and Template */
require(‘./wp-blog-header.php’);
?>

Thanks in advance!