How do you address a minor noble in Waterdeep?

If somebody was from a Forgotten Realms large city with a magic college on the edge of a desert…

Are there any artwork of Forgotten realms coins?

If you were recreating Volothamp in 5e what would you put him at for class, race, level?

Do firearms such as muskets, blunderbusses exist in the Forgotten Realms?

Ed’s Naval Battle

Is there a language that apprentice Wizards need to learn in the Realms?