This is probably the most disappointing of all the prelude books. If you know a little about the Avengers and you’ve seen all the other films, you’re covered. Don’t bother with this. It becomes especially pointless once you’ve actually seen the film, because it includes background on the Vision and Ultron which doesn’t apply so much anymore. Okay, it’s kind of cool to see a much more diverse team, including Jessica and Carol, but nearly all of this stuff is available elsewhere, and a big chunk of the book is just a retelling of the first Avengers film. Only it makes it a lot flatter and just lacks everything that made that a great spectacle: dialogue, fight scenes, team scenes… it’s all condensed down and drained.
Just… don’t waste your time.