Getting started into mathematical statistics for writing my own trade bot. No new ideas, just trying to apply some methods from the Mendelhall Scheaffer Wackery

Getting started into mathematical statistics for writing my own trade bot. No new ideas, just trying to apply some methods from the Mendelhall Scheaffer Wackery book. Would be helpful to find some books of Statistics or Probability Theory applicable to my goal - not because my book is bad but because from my opinion only first half of the book is applicable to my task, and I want not to become a Statistician but I want to become a dude with a bot.