Our Q&A site attracts a lot of questions asking for a reference or a tool, which, as we all know, are off-topic. (Okay, the title of my question is provocative!)
I think I have seen other sites on SX which answer theses questions in the form of community wiki polls.
Would it not be useful for us to partially support some well-chosen off-topic question by adressing them in a specific format, thus advertising the special nature (i.e. off-topic) of the question?
This could reduce the housekeeping and provide useful information to visitors.
And while there is no best book to learn C++, it is not uncommon some books aer universally recognised as bad, and that some groups of persons agree that a particuliar hand of book are canonical references like in if you want to do a PhD in CS in domain X, Y then you cannot avoid reading A or B.