Free Books on Machine Learning

Interpretable Machine Learning by Christoph Molnar

Deep Learning for Molecules and Materials by Andrew D. White

Information Theory, Inference, and Learning Algorithms by David MacKay

The Elements of Statistical Learning by Trevor Hastie, Robert Tibshirani, Jerome Friedman

An Introduction to Statistical Learning by Gareth James, Daniela Witten, Trevor Hastie, Robert Tibshirani

Model-Based Machine Learning by John Winn

The Little Book of Deep Learning by François Fleuret. He formatted the book for reading on smartphones—such innovative people!