I bounce around a few Stack Exchange sites to ask questions, mostly pertaining to technology, and sometimes I ask a question that is off-topic and I get some negative feedback and/or the question gets closed.
At the top of the sites are pseudo tabs for "Questions, Tags, Users, Badges, Unanswered, Ask a Question". I think it would be a good idea to add a new one called "Guidelines" with information, links, etc. pertaining to the rules, guidelines, and flavor of the Stack Exchange site.
I've seen on several meta sites that people are worried about driving off newbies because the newbies don't know the rules of this particular site, or newbies complain that people have it out for them (sometimes rightly so). Even hanging around Stack Exchange for a while, I don't always know or can't easily find all the pertinents for a particular site. For example, someone could easily be confused between the Raspberry Pi SE, the Electrical engineering SE, and the Linux & Unix SE, since there is a lot of overlap in a Raspberry Pi project. If you didn't know which SE to ask a question on, how would you know which one to ask a question on?
Is there already such a function that I am unaware of? I don't mean "the Tour", that's virtually boilerplate across all the sites.