An anonymous reader writes "A new site aims to more scientifically study and rank the relative popularity among Linux & BSD distros. Using multiple data sources, distros are ranked according to popularity factors like number of news articles published about that distro, visitor surveys and search engine results. Check it out!" Link to Original Source
The best book on programming for the layman is "Alice in Wonderland";
but that's because it's the best book on anything for the layman.