You access the Order Manager with the Reports>Orders menu.
The Order Status table is shown under the currency summary. It shows each order status that you have set to show in the Order Count List. You will notice that Complete does not show in this list because merchants have thousands of completed orders.
To see a quick list of orders with any status, simply click on the Status Name in the left column of the table.
This is particularly useful to access all New Orders, or if you have multiple people in your shipping department, all orders that are Ready to Ship.
From this table, you can click the Order ID to access the order and page through all orders using the Previous and Next links on the Order Detail page.