I don't see the point. “Getting started” is not intrinsically a bad thing. I think your questions fall under three broad types:
- “Tell me all about X, I want to learn about X.” → too broad
- “I know nothing but I want to learn how to attack X” → “Questions asking us to break the security of a specific system for you are off-topic unless they demonstrate an understanding of the concepts involved and clearly identify a specific problem.”
- “I know nothing but I want to learn how to secure X” → too broad, with a comment.
I find the existing close reasons satisfactory, I don't see the point of introducing a new one. Furthermore a “getting started” close reason might give the impression that we reject newbie questions, which is not the case — if you're willing to learn, not trying to bite more than you can chew, and not asking for us to write a book, then you're welcome to ask even basic questions.