Our customer support will be unavailable on Thursday, December 25, 2025. Normal customer service hours will resume on Friday, December 26, 2025. Please access our FAQs or use the chatbot on the AHA eBooks Reader (iOS and Android) for immediate assistance. Thank you for your understanding. A new version of the eBook Reader is now available on iOS, Android, Windows, Mac, and browsers. Download it from the Apple Store, Google Play Store, eBooks Portal, or access it on your browser.