This is a new introductory article from Sitepoint: http://www.sitepoint.com/article/version-control-git/
Thanks for that, I was looking for a good introduction like this a couple of weeks ago.

There was another Git article published last week that is worth a read, from the IBM DeveloperWorks site:
Git changes the game of distributed Web development
http://www.ibm.com/developerworks/web/library/wa-git/