assigning admins to multiple sites with different permissions per site
is currently possible and not that difficult with groups. seems like an
odd concept right away but makes sense when you get it all created.
create groups then make all users group...
What specific things are you having problems with? Management? Software
deployment? If software deployment, which software? Some software, in
particular certain 3rd party applications can be tricky. But somebody
here has probably already deployed it,...
The quick start guides there are basic but give step by step. If you are
looking for super detailed, check out the Administrators Guide, its
roughly 500 pages of knowledge with step by step setup of all of the
different functionalities of the Suite. ...