In this essay I would like to compare Moby Dick to The Secret Garden novels. There are many differences between Moby Dick and The Secret Garden. The Secret Garden is a British children's literature classic, and Moby Dick is a American children's literature classic book. The Secret Garden book written by Frances Hodgson Burnett, and Moby Dick written by American author Herman Melville. The Secret Garden book tells the life of the main character Mary. Moby dick book tells captain Ahab's adventure, ambition and anger. The Secret Garden book is an emotional book, but Moby Dick is a vengeful adventure book, so this two book are very different in terms of the role of subject and character.
I changed some wording and phrasing to make your essay sound more like something a native English speaker would say.
We would not say "The Moby Dick book" or "The Secret Garden book". We would say "The book Moby Dick...". Afterwards, we can refer to Moby Dick as a noun, as in "Moby Dick tells a story of the life of Captain Ahab." We would not say "The Moby Dick book tells the story of the life ...".