Code Python on Google Colab

Khan Academy’s SQL curriculum is quite well done

The best GUI-based free program for machine learning is Orange (Python based)

The best GUI-based free program for statistics is JASP (R based)

Best source of information about R: r-bloggers.com

Swirl: An interactive environment for learning R

Introductory Big Data E-Book created by Dr. Ryoo’s group

Introductory Big Data Teaching Tools, created by Dr. Ryoo’s group

Difference between R vs. Python: R vs. Python

Data science textbooks in Python

Think Stats

Data science textbooks in R

Modern Dive