41 books · Ages 5–9 · Chapter Books, Middle Grade
Barbara Park's Junie B. Jones speaks in a voice so distinctive that children can identify it from a single sentence. Her grammar is creative, her opinions are strong, and her logic is impeccable (to her). Twenty-eight books covering kindergarten through first grade, each capturing the specific dramas of being five and six years old.

Start at the beginning: Junie B. Jones and the Stupid Smelly Bus
This is a sequential series — each book builds on the last. Start with book 1.