One of the core ideas behind the calendar is presenting those who have inspired others to get involved in open source, so Yochai Benkler is an important one for me personally. I read his marvelous book The Wealth of Networks 3 or 4 years ago, and it was my first real in-depth introduction to online collaboration, to open source, and peer production, and it’s something I would recommend to everyone. You can buy the paperback, or, because it’s licensed under a Creative Commons NonCommercial ShareAlike license, you can download various electronic versions for free. If you want to read the book on your proprietary Kindle with its proprietary formats, I won’t judge you. Here’s how to convert ePub files to MOBI files.