As a non-technical person who decided to give this book a whirl, two things come to mind as I approach chapter 7 of the book: 1-it requires understanding of some basic algebraic concepts (as evidenced by the author's 11-year old struggles with if statements; I'd bet she struggled with greater or equal than, etc. concepts as well) and 2-the chapter quizzes are a little misleading and occasionally address concepts not taught in the current or any prior chapter.

Out of all the fits and starts I've had with programming in my pseudo-code nerd existence this is probably the most helpful programming book I've ever read and would recommend to kids above age 13 and adults wanting to learn Python.