The history books are very involved and reveals the rich Halo universe. The drive of the first Spartans to the destruction of the inflexible Hierophant, the pace is fast and exciting. It allows to better understand the universe in reinforcing aspects such as Covenant holy crusade to destroy all traces of humanity.
After the trouble it is in the fact that the books are not very durable and after 3 reading and a loan of pages already hard.
In short a good set to buy for any fan of Halo and also for others, no need to have played the game to understand, there's lira in order (although preferred)