Woocommerce Help me.

Hi i’m trying to create a shop and i choosed woocommerce.
The Site is https://dressdana.ro
I wann know how can i add a picture(https://i40.tinypic.com/2prwfb9.gif) next to slider.
Then i want to delete that “nothing found” From the front that appears when i click home or when you go on website you will see when visiting the site.
And i wanna post the new products in grid format on front page under the slider.
i’ve got this code but doesn’t put them in grid format and also don’t show the button.

add_filter('woocommerce_get_catalog_ordering_args', 'am_woocommerce_catalog_orderby');
function am_woocommerce_catalog_orderby( $args ) {
    $args['meta_key'] = '_price';
    $args['orderby'] = 'meta_value_num';
    $args['order'] = 'desc';
    return $args;
}

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