I've read The Bone Clocks by him a few years back - it was a recommendation that my creative writing teacher told me to check out since I have a knack for world-building in my short stories.

I remember it being pretty dense when reading the book, but the more I read it, the more I got invested in it. I, overall, really enjoyed it, and I look forward to reading more of his books later on in the early future.

Edit: typo

Hello! Love your work!

Out of all of the books you've written, which ones were the most fun to write, and which ones were the most challenging?