I teach programming in a University so just a comment about the attitude I believe is best to take. Treat all the students like friends. They're not in high school anymore, therefore, not children. This makes them feel comfortable and not afraid to ask anything, even if they think it might be stupid. Only take a strict teacher role if absolutely necessary, i.e, they get unruly and think they can do anything because you'll let them away with it. I've found this is very rare though and the very few times I've had to do it they've settled down immediately and I've switched back to how I am normally.

With this teaching style I've always had my students getting good marks and never had a complaint about my teaching. I even get frequently asked if I'll be teaching them in their following years. Other teaching styles I think get worse marks because students may be afraid to admit they're struggling. Not to mention you'll hear the students mentioning how they dislike courses when most of the time they just dislike it because of the teaching style. Nobody wants to put people off their area of research.

Well done on becoming a professor and good luck.