This illustrates displaying all the product items on a page using a simple PHP include file.
It is easy to modify the layout of the basic page, or to add the include file onto one of your own pages.
I would recommend that you keep the css styles as some are required to control the layout of elements. You may of course modify them to fit in with your site.
The include file can be changed to display just one specific product item, all products from a category, or all products from a category/subcategory combination.