First of all, a disclaimer for anyone reading this who doesn't know; I am a HUGE Marvel fangirl. I honed my writing skills writing Marvel fanfiction, I own every Marvel movie on Blu-Ray and I'm even a big Marvel's Agents of SHIELD fan. So I'm already pretty knowledgeable about the Marvel Cinematic Universe.
The problem with this guide is that it can't seem to make up its mind which Marvel 'verse it's part of. Is it the Cinematic Universe? The commentary by the Guardians characters certainly reads like it is... there's a particularly hilarious reference in the Savage Land section to the fact that Chris Pratt plays both Star-Lord and Owen Grady from Jurassic World.
Except... the Savage Land doesn't exist in the MCU, and neither do a lot of the other places referenced here. The Fantastic Four and the X-Men are mentioned multiple times, and they CAN'T exist in the MCU because of contract issues. So we have to assume that this is in fact set in the main comic Marvel 616 'verse.
And that's a problem. Because MCU fans outnumber comic fans by large numbers these days, and I think this book could actually have huge appeal to MCU fans. It's funny, it's informative, it could really help keep things straight and explain other things which are only mentioned in passing on screen.
Instead, it's just going to confuse readers because of all the non-MCU things in it - which will never be MCU.
This is funny, it's beautifully illustrated, and I thoroughly enjoyed it. I can't give it five stars, though, because I think it's going to miss its target audience. Which is a pity.