It's got character guides, episode guides with per-episode character designs, event report, and so on. It's basically a guide book for the TV animation series. Since I stopped following the anime, there are a lot of stuff that are new to me. It's filled with high quality content. Except for pages 97-112, this book is full color, too!
By the way, the latest manga volume (4) was released today!!! Mine is on its way! Merry Christmas!