How to Play “Fly Me Away”, from the Amazon Kindle commercial, on the piano keyboard. Song is by Annie Little.

I want to give my original kindle to my sister and buy myself the new edition. But, I also want her to be able to read all the books I have paid for and loaded already on the original kindle. Ideally I would deregister the original kindle before I give it to her so she can re-register to her own amazon account. But then will my old content disappear?