I am no expert, but i found the following really helpful to understand AI/ML from the basics; 1) Neural Networks for Applied Sciences and Engineering by Sandhy

I am no expert, but i found the following really helpful to understand AI/ML from the basics; 1) Neural Networks for Applied Sciences and Engineering by Sandhya Samarasinghe. Old book but great for understanding. 2) An Introduction to Statistical Learning: With Applications in R or Python by Hastie, Witten et al. 3) Any Statistics and Probability textbook should be at hand for reference.