"An Introduction to Statistical Learning" was written by two of the same authors, and is explicitly meant to be a lower-level introduction to the same ideas: ht

"An Introduction to Statistical Learning" was written by two of the same authors, and is explicitly meant to be a lower-level introduction to the same ideas: https://statlearning.com/ISLR%20Seventh%20Printing.pdf https://statlearning.com/ISLR%20Seventh%20Printing.pdf