Woocommerce Breadcrumbs? Shop navigation help please

Hi!

I’m very new to website building and wondered if someone might be able to point me in the right direction for these 3 questions please? I’ve tried searching for answers through the forums and am confusing myself further!

1. My breadcrumb (think that’s the term) currently appears up the top of a product like this…

Home / Nature / Owl on a Branch

Instead of “Home” linking back to the front Home page, how do I tell it to link back to the “Shop” instead so that customers don’t have to go back to the main navigation menu to get back into the shop each time?

2. How do I get a sidebar with the Product Categories to show down the left hand side of each “Category” page?

http://www.vividwalldecals.com.au/product-category/nature-decals/

3. How do I remove the yellow highlight on the numbers under the Categories?

Many thanks for your time! I really appreciate it!