Pro Git Book writes:
I put the content of the book online under a Creative Commons noncommercial 3.0 license. The book is titled Ã¢â¬ËPro GitÃ¢â¬â¢ and you can read it or reference it online at http://progit.org. The actual printed version will be shipping in another few weeks, but as Apress was kind enough to allow me to publish it under the CC license, you can take a look now. I hope itÃ¢â¬â¢s helpful to you in learning or teaching Git.