About the NOOK Reading App for Windows – Barnes & Noble
Barnes & Noble NOOK App for Android - Download and Install
Using NOOK for Web – Barnes & Noble - B&N Help Center
Barnes & Noble NOOK App for iOS - Download and Install
Buying eBooks and Other Digital Content – Barnes & Noble
NOOK for PC and Mac – Barnes & Noble - B&N Help Center
B&N NOOK Support – Barnes & Noble - B&N Help Center
Your NOOK Library – Barnes & Noble - B&N Help Center
Trouble Accessing eBooks? (Refresh Your Library)
Barnes & Noble NOOK App for Android - Troubleshooting