Brunces“
How do I know whether I have to use the preposition ABOUT or ON?
Examples:
- There are no instructions on how to do this.
- Where is my story on James Stweart?
”
Often, either one will do, but generally speaking, the choice is swayed one way or the other by the preceding word.
I would say instructions on and story about.
In my own mind -- and I can't speak for others -- on connotes a transfer of knowledge in some way, as well as indicating the subject matter; about indicates only subject matter.
Hence, (scholarly) article, (scholarly) paper, lesson, lecture, speech, instructions, dissertation, biography, ... on.
But (news) article, (news) item, story, chat, conversation, argument, disagreement, ... about.
CJ