Understandably I'm becoming a bit dogmatic but I'll say it again, AIMA/PRML/ESL are still the best reference textbooks for foundational AI/ML and will be for a long time.

AIMA is Artificial Intelligence: A Modern Approach by Stuart Russell and Peter Norvig

PRML is Pattern Recognition and Machine Learning by Christopher Bishop.

ESL is Elements of Statistical Learning by Trevor Hastie, Robert Tibshirani and Jerome Friedman.