Lots of Kindle options now including the new Kindle paperwhite are shared in this rundown post from cnet - the best I found today on the topic. eBooks are here to stay. Textbook companies can wake up or be left in the wake of an epaper revolution that is shredding the traditional book publishing industry. We've yet to see a great interactive textbook but that is coming.
This organization has created a YouTube channel called "Cyber Seniors corner" - film your grandparents and their wisdom and share it with this site to have it posted on YouTube. What a great idea to help grandparent's share their legacy. You're preserving this for your children and children's children and beyond.