It seem to me that the math at the beginning of this chapter unveils some of the mystery of the machine learning algorithms, I tried to follow that section but most of the math was over my head to be honest, but I have a willing to understand that section. I would like to do a math self study at home and I would appreciate If you could recommend some books that take someone with basic math knowledge to the level to understand what it was explained in chapter 6.

Thank you!