VitalSource is the world's largest provider of digital course materials. Our catalog includes over 90% of the core textbooks in use today as eTextbooks, as well as the largest online catalog of eResources and digital course materials available for instant access. Students can enjoy the benefits of anytime, anywhere access to important course materials from laptops, many tablets and even smartphones, with or without an internet connection. Plus, they save up to 80% compared to the price of print textbooks.  Using eTextbooks and digital course materials is a great way for students to save trees and save money. If your website or blog attracts an audience that is interested in learning, education, textbooks, saving money or helping the environment, working with VitalSource could be a great opportunity. And you'll benefit, too. You'll earn 3% commission on applicable purchases. We have teamed up with Commission Junction to provide our publishers with trusted third-party tracking, real-time reporting, and monthly commission checks.  We have API options available. Please email us if you would like to find out more about our APIs. Let us know if you have any questions or special requests, contact: affiliates@vitalsource.com