Which is accurate? "it's who you know not what you know" or "it's whom you know not what you know."
I think the correct version is "it's whom you know not what you know". You can update your English grammar by reading available literature's that helps one to know how to write a proper sentence and proper English sentence structure.
The one with the whom
It's not what you know, it's who you know. That's what they say about incompetent people in positions of power.