We do not have a formal textbook for this class, but I am still providing optional readings. The content of this course is heavily influenced by these books, both both freely available:

ESL - The Elements of Statistical Learning

ISL - An Introduction to Statistical Learning

At a minimum, skim through the text and look at the visualizations. Here's two examples of the great stuff you're missing out on if you don't.

The readings are as follows:

Notation guide:

There are numerous differences in notation, but here are the major ones: