I am writing my first novel, sci-fi, so I am inexperienced with some 'rules'. I have a few questions google seems to fail to answer, so hopefully you guys can help. ^^ First, if the person of my POV comes from a different world and sees for example a helicopter, should I name it how they see it and not 'helicopter' as it's unknown to them? Second, their thoughts, should they remain third person? I don't do italic, as I am not narrating from my point of view but from theirs.I mostly explain things that are unseen but important by their thoughts. Oh, and any rules for past tense? Thank you. PS, english is not my native language.