There's a relatively recent thread on
Firebird aerodynamics here. My best advice is to read like a madman, and use the search function often. But don't be afraid to ask questions. And read everything in sight.
I know you said "beyond just driving style and tire pressure", but don't neglect the
driving tips. It IS where you'll see the largest gains.
Did I mention there's a lot of reading?
Welcome to EM!