does anyone know where I can find chapter notes/summaries for this book?
I don't know, honestly.
It's an outstanding book -- I suggest reading it. I have the feeling that you're asking for summaries or chapter notes because you're assigned it to read but don't actually want to. When accompanied with John Adams, it's one of the most educational reads you'll likely find about that era in history.
It's honestly not a long read. When do you start school? It's a mite bit less than 300 pages, I believe. You might be able to dig through it in a few days.
It's not a difficult book. You could get through it seven days. Or just skim it.