Example starter template that removes a bunch of the markup Genesis adds to have a cleaner slate for simpler templates like landing pages.
<pre class="lang:php">&lt;?php

/* Template Name: Landing Page */

add_theme_support( 'genesis-structural-wraps', array() );
add_theme_support( 'genesis-menus', array() );
add_theme_support( 'genesis-accessibility', array( 'headings' ) );

remove_action( 'genesis_header', 'genesis_do_header' );
remove_action( 'genesis_footer', 'genesis_do_footer' );


add_action( 'genesis_header', 'landing_page_header' );
function landing_page_header() {
    // code
}

add_action( 'page_content', 'landing_page_content' );
function landing_page_content() {
    // code
}

add_action( 'genesis_footer', 'landing_page_footer' );
function landing_page_footer() {
    // code
}

get_header();
do_action( 'page_content' );
get_footer();
</pre>