Zak G's "The Absolutely True Diary of a Part-Time Indian" post one chapters "The Black Eye of the Month Club" through "Grandmother Gives me some Advice"

First off I would like to say that this book is a major relief from "I know why the Caged Bird Sings".  I really like how he can feel good about himself even with his unique head problem.  I would like to know, however, why the author decided to not number his chapters, as it gets really confusing sometimes because I don't know where I am.  I thought it was messed up when three thirty year old men picked on a fourteen year old boy with a head problem.  It was cool that Rowdy got revenge for Junior, which is why I thought it was weird when Rowdy went and beat Junior up just for transferring to a new school.  Though I would be upset if I had only one friend and they decided to leave but I don't think that I would go and beat them up.  I am really enjoying this book so far as it brings a sense of humor almost everywhere, even when Junior is being beat up by those thirty year old dudes, it still had that feeling of humor.  I am really excited to see where this book will lead too, but it seems like he will have a better life in his new school, what do you think Zakaria?