I haven't systematically taught programming myself, only tried to explain some concept or issue to more or less outsiders. It was always an interesting experience, and I learnt something every time.
Indeed, Jan Comenius noted already a couple hundred years ago that the best way to really deeply understand something is to explain it to others.
So go for it - it will be a valuable, enriching experience for you. You will surely get hard or surprising questions - that's OK. Don't try to pretend you know everything - just be honest and tell them something like "I don't know, but I will get back to you"you with an answer". They will only respect you better for being honest.