Luck, by Mark Twain - How a military “genius” made a name for himself. (1,700 words)
If you want to get notified of new blended book puzzles, there's an RSS feed at the bottom of the page.
The Fox and the Grapes, by Aesop - The classic fable of unfulfilled desire. (130 words) This is a good introduction to the puzzle, and continues from the tutorial on the main page.