The order tracking process takes place via emails that they will send you at various stages, including :
Confirmation of your order: once your order has been validated, you will be redirected to the confirmation page of their site with the message "Thank you for your order". At this point, they send you a confirmation email containing all the details of your order, inculding the shipping date (bottom of the email) :
Dispatch of your order: as soon as your order has been dispatched, they will send you an email to let you know and give you the tracking number for your parcel, so that you can follow its progress on the carrier's website.