How to ask good question at the end of lecturer interview I interviewed yesterday for a lecturer position at computer science. At the end of my interview, the Head of School asked me if I have any questions to ask them. This is my first time to interview, and I don't know what to ask, and just said to the HoS that ``I saw your research project on Youtube, and I was very interested in that topic, and is possible to have any future collaborations?'' I did see his research project on Youtube. However, I can feel that the HoS was not very happy. Maybe I screwed it up. Is this a sensitive question? Could anyone give me some suggestions on how to ask good questions? Thank you.
One good question to ask is, "What is required for a new lecturer to succeed here?" and the likes. I've asked this myself and the Head of School was very eager to share with me the answer. 

Asking people whether they would collaborate with you seems too early, as you will need to show them that you have something to offer.