I understand ??? that Iceberg has some limitations, it is not complete ......????
Iceberg already has pretty good support to manage pharo code.
You'll find however that it does not manage (yet) non-pharo files. That is, if your repository has scripts, pictures or such kind of resources, you will have for now to edit and commit them from the outside (command line or another tool).
I would be grateful if someone explained to me how operatively I can manage everything ...
up to where I can do with Iceberg directly from Pharo and how to operate from the shell on the git repository.
Documentation in this sense?
Well, you have iceberg's wiki
We are moving the documentation (hey, bit thanks to Tim Mackinon here!) to the main repository so people can easy contribute to it.
What is left is a sync mechanism between that directory and the wiki repository.
My goal is to setup a environment for integrate Pharo development with Gemstone GLASS Tode git support.....
Does anyone have experience in this sense?
That's not me, I hope you'll find somebody. But if you have any questions regarding Iceberg, don't hesitate to ask them!