Sending out a welcome mailer with all important threads, community rules and how to effectively search the forum will be immensely helpful to avoid random questions from newbies.
@TechnoFino Feature suggestion - Also, I have seen many posts going viral and having hundreds and thousands of replies, which makes it practically impossible for anyone to navigate through. I suggest a feature wherein OP or mods can pin certain replies of immense importance which any users can filter on and view only those messages rather than scanning 100-1000 messages.
All the pinned messages can be viewed chronologically