Wocommerce and setting up Parent and child page structure

Hi all

I am running a woocommerce website and need some help on the SEO.

I want to write some good content pages to boost my product category pages, i need to understand a little better how this works to make sure i do this correctly.

Do i write a good quality page of content around the category keyphrases and then add this as a page on the website. Do i then make the product category page a child of this parent content page?

If not what is the best way to structure it?

Also i have some categories that have a number of high level keyphrases that are relevant so i need to write some pages around each of the keyphrases, how do i then structure this around the category page, can i set a number of pages to parent of the child product category page?

Or do i have this totally wrong?

Hopefully someone can help

thanks