Last summer, Bloomberg BusinessWeek devoted an entire issue to “What Is Code?” a single article by Brooklyn-based writer and programmer Paul Ford. Ford’s breakdown of key concepts pulls back the curtain on the fundamentals of computer programming and makes a compelling argument that any smart person can learn the basics—and that the basics are worth learning even for those who aren’t planning to become professional coders. It is, in part, a case for coding as a new frontier in digital literacy. There’s a growing interest in this type of education among kids, teens, businesspeople, career changers, and the generally curious. And a growing number of public libraries are already responding to this need within their communities. Here’s a look at ways in which a few libraries have made their programs a success.