This is my first year of graduate school (masters in psychology) and I was assigned to a course that requires teaching tutorials every week. I took a prep course from my university that covered the basics- how to plan and deliver a lecture, marking etc., but I am still nervous (I haven't had much experience with public speaking let alone teaching a class). I also look very young, and I am concerned that students won't take me seriously. Does anyone have any advice? For example, how do you get everyone to shush so you can start, or deal with students that talk amongst themselves? Thank you!