Most basic customisation seems impossible

Interesting post

I got the rough idea of woocommerce-hooks.php, function.php

I m currently using wootheme superstore and would like to move
have the product description (i think that should be div class woo commerce-tabs)
underneath my image and price add to cart field. I tried to find a solution by looking at the emporium theme by woothemes,

if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
?>

<?php
	/**
	 * woocommerce_before_single_product hook
	 *
	 * @hooked woocommerce_show_messages - 10
	 */
	 do_action( 'woocommerce_before_single_product' );
?>

<div itemscope itemtype="http://schema.org/Product" id="product-<?php the_ID(); ?>" <?php post_class(); ?>>

	<?php
		/**
		 * woocommerce_show_product_images hook
		 *
		 * @hooked woocommerce_show_product_sale_flash - 10
		 * @hooked woocommerce_show_product_images - 20
		 */
		do_action( 'woocommerce_before_single_product_summary' );
	?>

	<div class="summary entry-summary">

		<?php

			do_action( 'woocommerce_single_product_summary' );

        	?>

	</div><!-- .summary -->

	<?php
		/**
		 * woocommerce_after_single_product_summary hook
		 *
	     * @hooked woocommerce_template_single_meta - 40
		 * @hooked woocommerce_template_single_sharing - 50
		 * @hooked woocommerce_output_product_data_tabs - 10
		 * @hooked woocommerce_output_related_products - 20
		 */
		do_action( 'woocommerce_after_single_product_summary' );
	?>

</div><!-- #product-<?php the_ID(); ?> -->

<?php do_action( 'woocommerce_after_single_product' ); ?>

[Please post code & markup between backticks or use the code button. Your posted code may now have been permanently damaged by the forum’s parser.]

trying to understand the way the layout of woocommerce works.

is this right????

the content-single-product.php just calls the two basic divs
then the content is split up in three calls? before-summary / summary / after-summary?
the number at the end of the hooks define the ranking or position of appearance within a call?

so its

div before @hooked 10
@hooked 20
@hooked 30
summary @hooked 10
@hooked 20
@hooked 30
after @hooked 10
@hooked 20
@hooked 30

with the functions.php I can move stuff around between before summary and after and change ranks: e.g.

/*---Move Product Title*/
remove_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_title', 5 );
add_action( 'woocommerce_before_single_product_summary',
'woocommerce_template_single_title', 5 );

Is all I need to do now find the right way of

remove_action delete tabs in summary
add_action add tabs to after_summary?

and if review shows up first I ll order the number e.g. @hooked 10 for it to be loaded before review?

I tried to edit a woocommerce add_action, but it does not work. Dont know whether this is the right way to customize a woocommerce action?

What I did:

added following code into woocommerce functions.php

global $woocommerce;
$arr=$woocommerce->payment_gateways->get_available_payment_gateways();
remove_action( 'woocommerce_email_before_order_table', array($arr['bacs'] , 'email_instructions' ), 10, 2 );
add_action( 'woocommerce_email_before_order_table', array( $arr['bacs'], 'newemail' ), 10, 2 );
function newemail( $order, $sent_to_admin ) {

    	if ( $sent_to_admin ) return;

    	if ( $order->status !== 'on-hold') return;

    	if ( $order->payment_method !== 'bacs') return;

		if ( $description = $arr['bacs']->get_description() )
        	echo wpautop( wptexturize( $description ) );

		?><h2><?php _e( 'FuckingDetails', 'woocommerce' ) ?></h2><ul class="order_details bacs_details"><?php

		$fields = apply_filters('woocommerce_bacs_fields', array(
			'account_name' 	=> __( 'Account Name', 'woocommerce' ),
			'account_number'=> __( 'Account Number', 'woocommerce' ),
			'sort_code'		=> __( 'Sort Code', 'woocommerce' ),
			'bank_name'		=> __( 'Bank Name', 'woocommerce' ),
			'iban'			=> __( 'IBAN', 'woocommerce' ),
			'bic'			=> __( 'BIC', 'woocommerce' )
		));

		foreach ($fields as $key=>$value) :
		    if(!empty($arr['bacs']->$key)) :
		    	echo '<li class="'.$key.'">'.$value.': <strong>'.wptexturize($arr['bacs']->$key).'</strong>';
		    endif;
		endforeach;

		?><?php
    }

[Please use the code buttons when posting code ]

Action removes, but then When I add my new customized action it does not trigger. Also it has problems with other payment gateways