I haven't read much Hulk at all, but that didn't matter with this book.
Having read "The Road to Civil War", this book explains what happens next to the Hulk after he is blasted into space by his "friends".
As a Hulk novice, this book was perfect for me. Little or no previous knowledge of Hulk or his universe is required - he lands on a new planet, and the reader is as much a stranger to this place and its people as he is.
The plot is fairly basic - evil dictator/emperor, Hulk smash/leads a rebellion, results, but the characterisation is great, as the variety of aliens on this planet add multiple layers of depth to this. The ending leads up to the "World War Hulk" series.
The only downside I felt was the Gladiator Guidebook to Sakaar at the back of this volume. It gives a very in depth account of the history of the planet and its people, but having read the preceding issues, I felt it would've benefitted from being dispersed throughout rather than collected together at the back. Some of the issues/history in the book would've made more sense if I'd been able to read parts of this first. Nevertheless, it adds a great level of detail to a great story.