In Catch Me If You Can, Frank Abagnale teaches a whole semester and no one ever figures out he's not a real teacher. Later when he's caught, he's asked how he could teach the class when he doesn't know anything about advanced sociology. 

Abagnale explained he only had to be one chapter ahead to teach the class. 

Dev. Writing "The Marketing Compass" newsletter, themed around marketing from first principles to help fellow devs learn to attract users and customers

You don't have to be the most knowledgeable person in the world to teach - you just have to be one chapter ahead of the people you're helping.

^ excepts from Expert Secrets that help me fight imposter syndrome as a writer

I haven't heard of it before! I'll need to read it. 

@moar reading list

Reminds me about Nathan Barry's Authority, one of the most important ebooks I read