Page Layouts: Here are a few standard page layouts.
From there I moved into Product Categories. The first image shows the top of the Parent Category page, where descriptive information will be placed to explain what is contained in the category. The second and third images show the default product sub-category view, and the row sub-category view respectively.
Product Page Layouts: All of the variations on category layouts.
Last but not least, the single product page layout.
Single Product Layout: Page containing a single or variable product.
If you would like you can view the style guide and all of the documentation that I produced to go along with it.