Personally I've had NN turned off for years now due to it just flooding my text box...

Sure, I suppose you could ask someone about stuff like: "Where is x" or "How does x mechanic work", but for any class related questions, I would advice looking stuff up online instead of asking people on NN. This is because the NN role is so easy to get that anyone can do it, so the chat tends to be filled with under performers who have no idea what they are talking about.