Welcome to Moodle? Gitting started is not that inappropriate a name. I suppose that the problem is it goes on being interesting and relevant even after you have started. However, the name is not 'Getting started then piss off'.
I would now worry about the fact that Quiz activity forum also covers Question* plugins. Of course, it also covers sub-plugins of activities like Assign, Book, ForumNG, Workshop, etc. While techinically the section name is inaccurate, I don't beleive anyone will acutally be confused by it. If peole are ever confused, then we can re-think.
Well, you could call it 'Activity modules and related components', or just put the related components bit in the section intro.