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When her first grade teacher told the class to write about something they were experts on, Nia Mya Reese didn't take long to come up with a topic: Being able to handle her 5-year-old brother, Ronald Michael.

That assignment turned into a book, published last November: How to Deal With and Care for Your Annoying Little Brother. Already, it's a bestseller, ranked No. 1 on Amazon's Sibling Relationships list. "It's kind of surreal," the Alabama resident's mother, Cherinita Reese, told AL.com. "I think the best way to explain it is, you know you're supposed to be walking on this path, and then it happens." Now 8 years old and in the second grade, Nia Mya is unfazed by her newfound fame. "I just feel normal," she said. Catherine Garcia