The World of Robert Jordan's The Wheel of Time

This is basically like an encyclopaedia about the Wheel of Time. It's full of spoilers, so do not read it before finishing all 15 books. You have been warned. The content is actually quite interesting, but it's quite boring. I'd use this book more like a reference book, but I'm not sure when I would read it. If you check anything while reading the books, you are bound to find unwanted spoilers, and if you read it after finishing all the books (like I have), you may get bored (like I have).