Many thanks to all contributors to this Guide and those who have given detailed feedback, including Julia Evans, George Grellas, Chris McCann, Leo Polovets, Srinath Sridhar, Andy Sparks, and David Weekly, and to the many commentators on Hacker News. The original authors are Joshua Levy and Joe Wallin.
This Guide is a living publication, imperfect but improving. If you have an idea or contribution that might improve this Guide, please add suggestions in the margins. We gladly credit all contributors.