You may wish to check the git tutorial or Jeff Garzik’s Git tutorial before reading further. There’s also a very comprehensive guide to advanced git usage (“branch wizardry and git grandmastery” ; ) called Git Magic available; despite the name it also addresses Basic Trickery for the beginner’s needs. See also “Git – SVN Crash Course” at git.or.cz.
Came across these on the Wine site.. treacherous wine.. ;) Will post more as I find em.. though I think the subject is well covered in the above links..;)