Celery allows you to export both an accounting and a fulfillment CSV. The fulfillment CSV is typically used to view and send all order details whereas the accounting CSV is used to see all transactional data (i.e. funds collected, discounts, etc).
Click "Export Orders" on the top right of your orders dashboard.
Choose between the accounting or fulfillment CSV. You may also opt to export all orders or only currently filtered orders.
Your CSV should automatically downloaded to your computer's desktop.