"Gene Yang brings computer coding to life."
-- Entertainment Weekly

"Secret Coders not only uses Logo but also touches on computer fundamentals like binary code and the three major ways that code is organized:sequence, iteration, and selection. By the end of Secret Coders, readers will learn them all, right alongside Hopper and Eni, not as something dry or rote, but something transformative."
-- Wired

"Gene Luen Yang’s talent is prodigious, his enthusiasm contagious....Even this confirmed technophobe was ready to learn coding."
-- Katherine Applegate, author of Crenshaw and The One and Only Ivan

"Yang and Holmes do such a great job explaining the concepts that even programming newbies will be likely to catch on. A cliff-hanger ending hints at deepening mysteries to come."
-- Booklist

"Holmes’s bold cartoony illustrations are a natural fit for Yang’s geeky enthusiasm, and their combined effort offers an enticing first taste of coding that may very well yield some converts."
-- Publishers Weekly

"An excellent first purchase that introduces readers to the power of computer programming through an engaging graphic mystery."
-- School Library Journal

"Convincing kids that coding “truly is magic” is Yang’s and Holmes’s agenda here, and their series opener certainly does the trick."
-- The Horn Book