There's also this paper which gives a general overview on which aspects of the game you should focus improving on once you mastered the basics of chess. "Train

There's also this paper which gives a general overview on which aspects of the game you should focus improving on once you mastered the basics of chess. "Training in chess: a scientific approach" https://pdfs.semanticscholar.org/e2dd/31c7db68667f1485f80d0e5a3ebb65fd960d.pdf https://pdfs.semanticscholar.org/e2dd/31c7db68667f1485f80d0e...