In the documents view you can view details of quotations, orders, invoices, deliveries, credit notes and payments on your account. Simply select the section you want to look at via the menu bar at the top of the page.
To view the details of the order or invoice you are looking at simply click on the row to expand it.
If any part of your order has been despatched you will be able to see the deliveries linked to your order by clicking the "view shipments" button.
If any tracking information is available you will be able to track your delivery by clicking on the "Tracking" link associated with a delivery.