Video of how to upload and share file on iOS client?

Hey there,
I’m just looking for a simple video that could show my mother how to upload and share a file from her iPhone. I’m on Android, or if do it myself (I know even the small differences between the Android and iOS clients could get her into trouble).

Does anyone know of a video like that (or if you’re feeling generous, could you create one?)

Thank you!

Look here