Can't find a comprehensive tutorial - SuiteCRM for dummies?!?

It’s quite possible I’m being thick, have missed a link, or can’t see the wood for the trees, but I can’t actually find a proper “complete intro to CRM”.

I can find little bits here and there - for example, once you get past the long intro and fighter-jet-like fan noise, this video is perfect for covering quotes, invoices and report.

The user guide is comprehensive but again, doesn’t give an overview.

As I said on another thread, I still get the feeling I’m peering into little rooms rather than getting an overview of the whole office.

As I understand it, SuiteCRM has diverged from SugarCRM by quite a bit by now, so is there any point me looking at SugarCRM training vids?
Or are they close enough to the core principles to be of some value?