Hi, there have been several questions about maps and mapmaking ("cartography") here. I don't recall questions about the "first maps" per se, so more input is welcome on that, but there have been many on accuracy. So kick back and dig into these sections of the FAQ:

• Maps in Ancient Times - a brief smattering of old maps, particularly Roman

• History of Cartography - several threads on various cartography techniques and many examples

These posts have all been archived by now, so if you have follow-up questions for these users, just ask them here & mention their username to notify them