Overall, this is a somewhat worthwhile companion to Capital. I like that it covers each chapter separately. I read each chapter in this in advance of reading the matching chapter in Capital, and I did find that it helped give me an understanding of what that chapter was going to be about.

But it's also not a particularly necessary book. The summary aspects of it are fine, but not particularly distinctive. I'm sure one could find lecture notes, etc. that would do just as well.

The real goal of the book seems to be for Choonara to argue against certain points in David Harvey's much more popular Companion to Marx's Capital. Some of the arguments seemed pretty esoteric to me. The disagreement that was the most clear to me was about applicability of the concept of primitive accumulation to modern neoliberalism. And on that point, I think Harvey is entirely correct.