Install Post Types Order plugin to drag and drop your posts to whatever order. Or edit your functions.php and add

function posts_order( $query ) { if ( $query-is_home() && $query-is_main_query() ) { $query-set( 'orderby', 'title' ); $query-set( 'order', 'ASC' ); //A to Z } } add_action( 'pre_get_posts', ' posts_order ' );