Determined to teach youthful users of digital devices how to write code, the mysterious programmer Jonathan Gillette wrote an entertaining and informative guide to the programming language Ruby that he made available online for free. He also designed a free application known as Hackety Hack that teaches novice programmers how to master Ruby. This is the intriguing story of an idealistic programmer who demystified the world of programming for young people and then vanished into cyberspace. It is also a useful guide to both Hackety Hack and Ruby, one that introduces readers to some of the basics of computer programming.