I'm kinda new here...I've read all of Brandon Sanderson's fantasy novels, but the whole cosmere and shard stuff is kinda mindblowing....which of his books are part of the Cosmere? And where did the whole Adonalsium thing come from? And which book did the concept of the shards come from? And finally, why didn't he publish his Dragonsteel book(s) and could I possibly get them somehow? Thanks and sorry for all the questions, but this is all very exciting.