Roy Ho

This is kinda an open ended question as the answer varies because it depends on the view as looking at your site, you have multiple layouts that may or may not work with one answer.

But to start you along you can add this to your CSS.

.fullwidth h1 { clear:both; }

For that you need to use shortcodes. Create a page for that and in your page settings, click on the WC shortcode button icon and it will let you generate the shortcode you need to display the specific category.

The other way is to go to your menus and drag the specific product category to your menu and name it SHOP and when clicked, will display products from only that category.

“it fails”…doesn’t really help explain what your issue is. If it works in theme’s functions and not in plugin, it is a good sign that your priority is wrong. Try setting a higher priority number so it is executed later…

Also did you check the data that is passed into the callback of the hook I mentioned?

I believe you have already asked this exact question here -> http://wordpress.org/support/topic/possible-for-product-featured-image-to-change-2?replies=1

There is no need to double post as it makes it harder for us to help…

I believe stock status is a post meta so instead of using get_terms, you may need to use WP_Query so you can use meta query.

Use WP logout function like this -> http://codex.wordpress.org/Function_Reference/wp_logout_url

Can you not use CSS to accomplish what you’re after?

hmmmm…I didn’t even know such page or shortcode even existed…