When you receive your shipment confirmation, you can click on the link to track your order. Through this link, you will be able to track your order up until your order enters your country. Once your order departs the USA through Chicago or New York,  the status of your order will no longer update through that link. The only time it will update again is when the order has been delivered to you.
Some customers have reported that they have been able to take the tracking number they received from us, and have been able to put that number into their country's local mail service to get more updates on where their order is and when it will be delivered. e.g. for the U.K. enter the tracking number into RoyalMail's website to track your order to see where exactly your order is and when it will be delivered.