Star Wars: The Princess, the Scoundrel & the Farm Boy, by Alexandra Bracken
The third review. This person read all three of the Star Wars samplers right away because she is a big fan of the original movies. The original originals, not the revised versions Lucas foisted on us.
This book is a retelling of the first Star Wars movie, A New Hope. The approach it takes takes all the fun out of the story as you don't discover who the characters are as the story unfolds. It tells you right up front who Princess Leia is, how she was raised and what she was trying to do. The movies emphasize the story, and that's what makes them so good.
There are spoilers. When Leia is recording the message R2D2 is to carry to Obi-Wan Kenobi, the book says Kenobi is a legendary Jedi knight who'd gone into secret exile. It was much more interesting Kenobi's mysterious nature be slowly revealed as it was in the movies.
Don't let this book be your kid's first introduction to Star Wars. Show them the movie.