Subscription processing from PayPal used to involve manual authorization of each user by staff at Textbook Consortia. As of May 2010, a robust implementation of the instant payment notification system has been installed. With this new system, the potential subscriber clicks on the PayPal button and fills out a simple form for payment. Once payment is verified, PayPal sends a notification back to the Through the Microscope site and the subscriber is granted access. Authorization should take just a few minutes. As always, if you are having trouble, contact Textbook Consortia using the contact form [5].
If you purchase a hard copy of the book from lulu, you are entitled to a free subscription to the website as part of the purchase price. In this case you need to contact Textbook Consortia using the contact form [6].