[rookie]

I would suggest starting here. Good luck.

http://whygitisbetterthanx.com/

[koenigdavidmj]

And once you convince them, they will likely say that it would cost too much to migrate.

Then you tell them that you have already been using git-svn for months to do your work, and the migration is effectively done already.

[St-Clock]

Every time I see a reference to that website, it makes me cry.

As someone said: "The biggest non-technical difference between git and mercurial is the rabid culture surrounding git. mercurial users fairly happily and quietly use their tool, while I've had to send two separate door-to-door git missionaries away today alone." (http://www.rockstarprogrammer.org/post/2008/apr/06/differenc...)