A good source control system can make us significantly more productive, and more satisfied with our jobs. Git seems to fit the bill very well. The following sources provide more information:
A book written by Scott Scacon, titled Pro Git. This books describes the daily usage, as well as the internals, yet it is very short: Git is a very simple to use tool, without unnecessary complications. The book includes a chapter on integration between Git and Subversion, in case different parts of the system use different source control.
A youtube video of Linus Torvalds speaking about Git. Linus Torvalds's presentation is mostly about his day-to-day work as a lead of a Linux kernel project. To make long story short, Linus prefers Git over any other source control system and highly recommends it. Because he sets the bar very high, that's a huge plus for Git.
A discussion on stackoverflow.com, where Jon Skeet describes how he uses Git with Visual Studio. Jon Skeet is one the best experts on C#, the author of "C# in Depth".
And last, but not least, Git extensions - the integration between Git and Windows Explorer, the bridge similar to Tortoise SVN.