The Booklet: Lehre an der TU Graz is a good reference book on the most important topics related to teaching.
It covers the following areas:

• ORGANISATIONAL STRUCTURE IN THE AREA OF TEACHING AND LEGAL BASES
• PLANNING AND CARRYING OUT TEACHING EVENTS
• CHECK AND JUDGE
• SUPERVISING (SCIENTIFIC) WORK
• INFORMATION AND SERVICES

Further information can be found in the TU4U in the section Handbuch für die Lehre] and for all other topics which might be of interest to you as an employee of the TU Graz in the section TU4U Bedienstete.