As for light-hearted fiction books - there's plenty. I just finished reading all 14 books in the Wizard of Oz series to my son (on my Nook). Zane Grey published a lot of Westerns as well as a few about baseball (I like the baseball ones). There's also some high quality public domain science fiction from authors such as:
Harry Harrison (only a few that he forgot to copyright)
Cory Doctorow
Peter Watts (Blindsight is awesome, Starfish is good too)
And if you like any of these, Feedbooks always suggests related titles at the end of the book that you might also like. On Kindles, these are live links for one click downloads.
Frankly, I'm amazed that the quality and organization of Feedbooks is so much better than the Nook and Kindle stores. Obviously there are far fewer titles though.
Harry Harrison (only a few that he forgot to copyright) Cory Doctorow Peter Watts (Blindsight is awesome, Starfish is good too)
And if you like any of these, Feedbooks always suggests related titles at the end of the book that you might also like. On Kindles, these are live links for one click downloads.
Frankly, I'm amazed that the quality and organization of Feedbooks is so much better than the Nook and Kindle stores. Obviously there are far fewer titles though.