Mercurial: The Definitive Guide
Mercurial vs Git « 503 Service Unavailable Edit from 2009-04-10: as time passes and I receive feedback, this article is being refined and modified subtly to remove typos, make concepts more clear, or clarify when something is not really needed. Special thanks to Martin Geisler for pointing out my mistakes related to Mercurial. There are many blog posts and articles all over the Internet providing comparisons between Git and Mercurial. Most of them only briefly describe the main differences and then try to decide which one is better.
Update 1: Wikipedia now has a pretty good DevOps page Update 2: Follow-up posts on the business problems that DevOps solves and the competitive business advantage that DevOps can provide. If you are interested in IT management — and web operations in particular — you might have recently heard the term “DevOps” being tossed around. The #DevOps tag pops up regularly on Twitter. DevOps meetups and DevOpsDays conferences, are gaining steam.