The Personal MBA by Josh Kaufman is a wonderful book which gives an outline of important business concepts. As he himself says in his manifesto–
MBA programs don’t have a monopoly on advanced business knowledge: you can teach yourself everything you need to know to succeed in life and at work.
The Personal MBA is a project designed to help you educate yourself about advanced business concepts.
By reading his recommended books and the Personal MBA one can gain all the knowledge and more one can get by actually doing a MBA.
He has outlined the key concepts in the book in his website and I have converted it into a book summary which you read here.
You can also view a list of great business books that he recommends here.
The Tao Of Wealth 
Nice article. Found Related https://www.businessinsane.com/2020/03/the-personal-mba-summary-josh-kaufman.html