Know about know about & knows about knowing about knew about known about

1. know about p.v. When you know about a situation, plan, or other information, you are aware of it.

Jim isn't here. Maybe he doesn't know about the schedule change.

Thanks for telling me, but I already know all about it.

2. know about p.v. When you have studied something and learned it, you know about it.

I don't know much about history. I was a business major.

Knowing about art and being an artist are two different things.