In the United States, we ship by FedEx; FedEx does not accept
               packages for P.O. Boxes; please include a street address and a
               phone number.  Thank you.
 

PAYPAL accepts all major credit cards:
Using PayPal to purchase the book is easy and does not require a PayPal account. PayPal now allows you to use your credit card without signing up for a PayPal account:

1. Enter your name and shipping address.
2. You will be prompted for your credit card, email address, and phone number.
3. (Optional) After reviewing your information, you may choose to save the information by creating a PayPal account to make future transactions faster.