R
install.packages("tidyverse") from RStudio’s console)Python
Strongly recommended
Bertsimas, O'Hair, Pulleyblank. The Analytics Edge. From the editor or on Amazon. (alternatively, the EdX course)
The Analytics Edge EdX course: https://www.edx.org/course/the-analytics-edge-2 (free) NOTE: the EdX course starts on October 15, but the one on MIT OCW seems to be open: https://ocw.mit.edu/courses/sloan-school-of-management/15-071-the-analytics-edge-spring-2017/index.htm
The ML specialization course: https://www.coursera.org/specializations/machine-learning (free)
Grolemund, Wickham. R for data science. http://r4ds.had.co.nz (free)
The Python Tutorial: https://docs.python.org/3/tutorial/ (free)
Recommended
Kleinberg, Tardos. Algorithm Design. Addison Wesley.
Boyd, Vandenberghe. Introduction to Applied Linear Algebra: Vectors, Matrices, and Least Squares. Cambridge University Press.
Leskovec, Rajamaran, Ullman. Mining of Massive Datasets. Cambridge University Press. Publicly available at http://infolab.stanford.edu/~ullman/mmdsn.html.