I think that it might be a good idea to add another tutorial for
complete newbies.
Note Mediawiki.org doesn't have a "Git tutorial". There are tons of those on the web. Thanks to recent work (by Quim and others I think) we have three fairly rational pages, https://www.mediawiki.org/wiki/Gerrit/Getting_started https://www.mediawiki.org/wiki/Gerrit/Tutorial https://www.mediawiki.org/wiki/Gerrit/Advanced_usage
Improve those. I'm certain more pages won't help. Git+Gerrit is fundamentally hard and complicated with lots of steps and commands, so the tutorial is going to be long with lots of sections. Additional pages writing down "Stuff I found difficult before and after going through the tutorial" just add to the confusion.
Petr's document is useful for the dwindling band of people familiar with svn, and I'm not sure why it mentions git push (I never use it, I use git review with gerrit).
A big problem with the documents is inconsistent setup. They don't even agree whether the remote should be called origin, gerrit, or review, because the experts who add to them have different opinions.