Being a person with doctoral degree, I have taught many classes as a part of my program. I can use PowerPoint presentations and address your doubts in simple terms. I believe in simple teaching and I never complicate things. My classes will always be interactive and hence I want my students to ask as many questions as possible. But I also expect them to prepare well before every class. I don't believe in being strict with students. I have always been patient with the students I have taught.