The book is basically done, as it’ll be released here in a few months (June/July depending according to them), so they’ve already probably had to push everything. It is meant to be an introduction book so don’t expect anything too crazy, also the course follows the book as well, so there won’t be any surprise material that shows that you weren’t expecting. For part 1 at least if it’s not in the book, it wasn’t in the course. (Also we didn’t go over the entire book during it, as there’s far too much material for that)