Welcome Ruby Lu! In what is billed as the first in a series, Ruby Lu bursts onto the scene with Oscar, her beloved baby brother, at her side. Whether she is furling her cape and performing backyard magic tricks or visiting her grandparents, PohPoh and GungGung, Ruby’s enthusiasm for life bubbles out of her. She loves her house, her neighborhood, her second-grade teacher and, well, just about everything. When Oscar begins to talk, Ruby learns just how hard being a big sister can be. He reveals the secret of her best magic trick and easily learns the words to the songs at Saturday Chinese school, slowly deflating her ego. Young readers will identify with Ruby’s excitement and good intentions, even when she is slowly and carefully driving her brother to Chinese school and parking the family car in the principal’s spot. Wilsdorf’s airy pencil illustrations joyfully bounce through the text. Hooray for Ruby Lu: she can ably join Hurwitz’s Russell and Elisa, McGovern’s Julian, and Cleary’s Ramona on the shelves of excellent series fiction for new chapter-book readers. (Fiction. 6-10)