Graz has an airport, is integrated into Austria's train & coach network, and is also easy to reach by car. Graz Tourismus offers and overview on how to
get to Graz (CLICK HERE).
The conference venue is near the
main square (tram stop "Hauptplatz/Congress").
THIS VIDEO illustrates how to walk from the tram stop to the entrance of Congress Graz.
Parking: the closest option is
ANDREAS-HOFER Platz. Other options are:
Roseggerhaus, and
Lendplatz.
Open-air parking is possible (up to 3 hrs in the
"blue" zone; in the "green" zone is cheaper and you can park multiple days for ~7€/day; you can pay at pay machines locally, most of them accept Maestro cards). You can find a map of the parking zones
HERE.