In addition to money, business and health, I would also advise reading books on history, politics and psychology.
One of the greatest books ever written in my estimation is that little gem by Eric Hoffer written back in 1951, The True Believer. It is the inside basics about how humanity really works.
Then, too, there is my own contribution, A Quick Look at the Essence of Man and His Universe. It not recommended for conservative ideologues.