Being a triology, the books do need to be read in order. There are many references back to characters and events of the previous two books. If you haven't read "The Cloak of Light" and "Rise of the Fallen", you'll need to start there before picking up "Light of the Last." Chuck Black has also written a couple of other series, The Kingdom Series and The Knights of Arrethtrae. My husband is currently reading the Kingdom Series to my third grade son. They are both captivated by them. My teenage daughter read several of The Knights of Arrethtrae books and enjoyed them. I can't comment on those series as I haven't read them personally, but from overhearing bits read out loud, I can verify that they are written to be more appropriate for a wider range of ages. The War of the Realms Trilogy is a thrilling and complex read that I would consider appropriate for teens to adults. The vocabulary isn't necessarily difficult, but the dangerous scenes including combat are descriptive (without being gory, or I wouldn't enjoy them) and the concepts presented are aimed at a mature audience.
These are the only books I've binge-read in the last 5 years. I read a fair amount, but usually, I have no problem setting a book aside and accomplishing what I need to in life. When this book arrived, I had the foresight to not even open the book until a weekend. I had read the first two books in less than 72 hours, and this was no exception. If I'm going to stay up too late reading, I might as well plan for it. I would recommend these books to any mature Christian for leisure reading and as a prompt to ever keep our minds and eyes fixed with an eternal focus.
***In the interest of full disclosure: I received a copy of this book courtesy of Blogging for Books for the purpose of this review. I was not required to give a positive review, my opinions are my own.