All your published items show up in your catalog page (or Shop page).
Most options are available in the Customize menu: display attributes, website categories, etc.
Highlight a product
Boost the visibility of your star/promoted products: push them to top, make them bigger, add a ribbon that you can edit (Sale, New, etc.). Open the Shop page, switch to Edit mode and click any item to start customizing the grid.
Quick add to cart
If your customers buy a lot of items at once, make their process shorter by enabling purchases from the catalog page. To do so, add product description and add to cart button. Turn on the following options in Customize menu: Product Description, Add to Cart, List View (to display product description better).