Going on a ride along tomorrow

I have zero experience with farriery mild experience with horses and I called up a local farrier to see if I could get an apprenticeship to learn the trade he said he wasn’t looking for an apprentice but would be willing to let me come along with him and his apprentices so I could learn the trade and he said maybe I will learn to shape a horseshoe at his forge what should I expect/do so I don’t look like a fool