We always offer complimentary PDF versions of books we publish, regardless of where you bought the physical book. If you buy direct from us, the PDF will be emailed to you automatically. If you buy from another retailer, you can email us (support@modiphius.com) a copy of your receipt, sales invoice, order confirmation, or other proof of purchase (a pic of the book alongside a piece of paper with your email address on it is fine), and then we'll get the PDF sent out to you. In addition, some of our books will include a code that you can use on our webstore to get 100% off the price of the PDF version.