I once was PA for a local production company.
My responsibilities included: getting coffee, holding stuff, and occasionally dressing up in an alligator costume and dancing in front of a green screen because the “actor” called out sick.
This was my first taste of advertisng.
Since then, I've:
Filmed live military exercises.
Wrote for a blog about horses.
Wrote for a blog about weed.
Produced work at The Martin Agency.
Learned I was awful at producing.
Got into the Brandcenter.
Wrote copy instead.
Got a fancy book and fancy degree.
Took this really nice, really professional, photo: