Author Shoba Narayan stands as a shining example of the writers’ axiom: Write what you know. Her just-published first book, “Monsoon Diary: A Memoir With Recipes” (Villard, $22.95), recalls the Indian-born writer’s childhood, her struggle to convince her parents to send her to a U.S. college and her arranged marriage. Narayan will make two appearances in Fort Myers on Saturday to read from, and autograph copies of, her book.