I'm sure you will do fine, Milly. My BA is in Education. I also have a MA in Religious Studies. I still remember my first day in my own classroom. Of course, I had student teaching as part of my degree requirements, but when you are standing in front of the room on day one of your first class, it's something you never forget. I remember as soon as the bell rang, the students went silent, and I had to start by telling them my name and informing them that I would their teacher for this course. Of course, when it's your own class, you can do a bit of an ice breaker on day one. But you might want to start off by asking them how many of them have ever done any work on their family trees, and then go from there.
I am looking for courses now that will enable me to help others find their families as I have been finding mine. I've been working on mine on and off since 1997. When I lived in NY and was a teacher, I'd go to England for the summer, stay with various relatives, and work on the family tree. Since moving to Washington in 2003, I have only been back to England once and didn't have a lot of time to work on things. So I do it all online now.
I will certainly be happy to report back on any courses I take. Not sure which forum subject that would go under, but I guess if I post it in the wrong place, a moderator will move it

Good luck and let us know how you go on with your course!
Carole