You can manage your orders with the Dashboard. Click the Orders tab on the left hand side to access this. You can choose whether you want to view your orders in board or list view with the option at the top of the screen. Your orders from customers will be split into new, in progress and completed.
This is a great way to track when orders come in, keep on top of your in-progress orders before they get sent out, and view which have been successfully marked as completed.
On the top right corner, there will be a settings icon. If you click this, you will be able to add additional order statuses that suit your business if needed, and choose whether you show unpaid orders from your customer in your workflow.