There’s a new page in the title bar above, called Xtra Stuff. Yes, I apologise for the spelling, I just liked it there.
It’s a section designed for book-related material that might interest you, starting with the map of the realms that Crown Prince Fred has drawn for the Trilogy. It also links to the blog posts on the A to Z of Princelings and the Character Interviews. I may bring both of those in one section over to this website at some stage.
If there’s any background information you’d particularly like, let me know with a comment below. I’ll see what I can do.