An overview of courses offered by the Institute of Public Economics is available via UniGrazOnline. By clicking on a course title you get details like content, objective, teaching language, or the number of ECTS credits for that course.
Course registration for Incomings
If you wish to attend a course at the School of Business, Economics and Social Sciences, the first step would be a registration for that course at the "Prüfungsamt", RESOWI-Center, tract A, on the ground floor. A prerequisite for course registration is admission to Graz University and a valid registration number ("Matrikelnummer"). Information about admission to Graz University is available here.
Lots of useful information for Incomings is provided by the Office of International Relations at Graz University.