Hello, everybody. The first book I read that was of the Cosmere was the Stormlight Archive, having no pre existing knowledge of the shared universe it was in. I later started out on the Wheel of Time, in the middle of which I had started and finished the first era of the Mistborn series, which was when I actually found out about the Cosmere and the various worlds situated within it.
Since then, I have read (from the Cosmere) Elantris, skyward, and some of the short stories Brandon Sanderson has written. I hope that I like this website, and will learn and read more about the Cosmere and the worlds within it.