First Picture: The opening of the park that Eddie works at and the picture of the girl in the middle is of Ruby, who is one of the five people he meets in heaven.
Second Picture: Mitch Albom the author of the novel. He wrote the story about his uncle, who the main protagonist Eddie is named after.
Third Picture: A picture of the novel itself, which inside shares a picture of Albom's uncle and a picture of him as well with a little description about him. This is relevant because the reader may want to understand more about him and what other book he has written.