Hi,
Long time ago when I started learning with git I decided to create a simple guide (basically I was just taking some notes of what is needed). I never thought that it could be useful to anyone so I never announced it anywhere. However I got some feedback to it, so I decided to inform you too.
The basic idea is to create a TOTALLY SIMPLE guide that git illiterates like me can understand and thanks to which they would find out how to do stuff in wikimedia git / gerrit.
Link is here: www.mediawiki.org/wiki/User:Petrb/Git_for_idiots
It doesn't contain so much and there are some mistakes / feel free to fix them.
Since wikimedia switched to gerrit from svn I have yet met a tons of people who had problems adapting to it, so this could eventually help some.