I am a Nook Color user as well as an Amazon Kindle Fire user.
I have some books from my collection on one unit, and some books on the other.
I had to learn how to read Barnes & Noble Nook books on my Kindle Fire.
Some users are reporting that they are usingGetJarto obtain the Nook app for their Kindle Fire.
I find the method above easier though.
FAQ
Why is the Install button grayed out?
Amazon released an update that does this sometimes.
Then go back to the install screen.
Doing that will light up the Install button.
