Mercurial: The Definitive Guide
This is the free online version of the book “Mercurial: The Definitive Guide”. It was published in 2009 by O’Reilly Media. Mercurial is a fast, lightweight source control management system designed for easy and efficient handling of very large distributed projects. This book tells you what it is, why you should care, and how you can use it effectively.
Read this free book.
Free online book: Pro Git
Git is the version control system developed by Linus Torvalds for Linux kernel development. It took the open source world by storm since its inception in 2005, and is used by small development shops and giants like Google, Red Hat, and IBM, and of course many open source projects. This is a book by Git experts to turn you into a Git expert. It introduces the world of distributed version control and shows how to build a Git development workflow. You can read it online for free.