I've been meaning to do something like this for about 3 years and finally got around to it. It's a video series in which I go over a number of common Git and Gerrit activities for doing OpenStack development. As I mention in the intro, this isn't intended to be Baby's First Git/OpenStack Tutorial (although I do go over some pretty basic stuff) because there are other resources for that. What it is intended to cover is the stuff I periodically see questions about from other OpenStack developers. I'm hoping it will be helpful for new and even more experienced developers. Of course, feedback is always welcome. If you know a better way to do something I demo in the videos then I would love to hear about it.
Anyway, here's the YouTube playlist of all the videos I've recorded so far. Git and Gerrit Demo Videos. I may make more in the future (especially if I end up seeing a lot of questions about a certain topic), and of course will add them to the playlist if I do.