The shopping cart can be viewed from the menu, or it will come up automatically when an item is added to the cart. It will show a summary of items and a purchase total. You can remove items from the cart by checking the "Remove" button and clicking "Update Cart" button. If you are able to change the quantity, you can update it also using the update button. You can empty your shopping cart by clicking on "Clear Cart".
The "Back to Shopping" button returns you to the Product pages and the "Checkout" button takes you through the checkout procedure on a secure site.
If your shopping cart contents qualify you for discounts on additional products, these items will appear in a list at the bottom of the page along with the discounts available for each.