This is the British Marxist critic Terry Eagleton's book on Walter Benjamin, though he immediately lets you know he's not writing an exegesis or a "critical account" of Benjamin's thought, instead often getting at Benjamin by putting his texts in conversation with more immediate intellectual traditions, like British literary criticism or deconstructionism. That's Part One, and then Part Two is a collection of essays on different topics, such as a history of "rhetoric" or a defense of marxist criticism in general (this one is pretty good and worth reading as a stand-alone), sometimes only lightly connected to Benjamin.

I was introduced to Eagleton through his LRB articles, where he's often excellent at writing about complicated interpretitive nuances in plain language. This book, on the other hand, is definitely pitched towards people who are already drilled in the tricky, torturous language of academic theory: "For Milton's text too, remote as it is from those that Benjamin examines, is the drama of a jagged line scored by some primordial catastrophe between physis and meaning, the plot of a history reduced by God's apparent withdrawal to certain signs and fragments urgently in need of decipherment..." Uhh...

Maybe for this reason (and because I don't have my physical copy to hand), I find it hard to really recall what I learned about Benjamin, though I did leave with the intuition that you should be wary of feeling like you "get" him too easily. Like Marx, he's someone worth trying to understand very precisely instead of just picking up the "gist" of his idea; he gets weirder and more complicated, but more exciting, the more you go into him. So I think this book will have done it's job if it helps you resist a too-easy appropriation of a genuinely strange, esoteric, and complex thinker, and there are some interesting arguments along the way, including Eagleton's joyfully scornful attack on deconstructionism. But I'm not sure if you'll get much out of this if you're not an english department grad student.