That depends on what your trying to do.
If you want to get the page content in another template or functions file and your home page is a page that you created in the dashboard and set as the static front page
you can use get_page_by_path
function like this:
get_page_by_path('the_path_of_the_page'); // Usually will be 'home'
Or if you want to use get_pages
you can do the following:
<?php $args = array(
'post_type' => 'page',
'post_status' => 'publish',
'post_name' => 'the_slug_of_the_page' // This also will likely be 'home' for the home page'
);
$home = get_pages($args);
?>
See get_page_by_path in the Codex.