// Add this code to your functions.php
add_action( 'init', 'create_post_type' );

  function create_post_type() {
  register_post_type( 'products',
    array(
      'labels' => array(
      'name' => __( 'Products' ),
      'singular_name' => __( 'Products' )),
      'public' => true,
      'has_archive' => true,
      'rewrite' => array('slug' => 'products')
      )
    );
}

// Add this code in your template file
<?php
/**
 * Template Name: Products
 * Description: Product template
 *
 * @package Waipoua
 * @since Waipoua 1.0
 */

get_header(); ?>

// The loop for your custom post Types
<ul class="products">
<?php $args = array( 'post_type' => 'products', 'posts_per_page' => 30, 'orderby' => 'rand' );
$loop = new WP_Query( $args );
while ( $loop->have_posts() ) : $loop->the_post();
	echo '<li>';
	the_title('<h3>', '</h3>');
	the_content();
	echo '</li>';
endwhile; ?>
</ul>