If you want to learn how to be a GREAT programmer, not just good enough to program an app application, but good enough to be GREAT, study machine language. Study 1s and 0s. Study the history of the computer, learn how to make an operating system, and Fortran, Cobol, Pascal, Lisp, C, C++, all the way through the modern languages of Python, etc.James Altucher, The Rich Employee
To be GREAT at anything you have to study its history. You need to know everything about the subject inside and out. If it’s a passion this shouldn’t be a problem. Don’t just focus on the current trends. Learn from the past while dealing with your present.