I think question asking should be encouraged so newbies don't feel under pressure to read past games (i found this really boring when i was starting, i also found that reading over a past game is not quite the same as playing in it) or search around the site for answers. I always add "if you have any questions about your role or the game in general feel free to PM" when modding and i think that encouragment like is a good idea.
In my first game i let Tally put the final vote on the town so i escapedEven if it comes down to Day 3 and the new player casts the lynching vote on the innocent instead of the scum, it's not that big a deal
But good point and i think people should also be ready to point out that the player who added the final vote is not responsible for the lynch and that everyone voting played a part in the death of the person in question.