Take the time to reference every name and character online, if you haven't already you'll be amazed by the degree of crossover with his other Cosmere series. Some are obvious, some not so much. Just don't do that while reading the brand new book, really spoiled parts of the last one for myself, save it for the reread. (facepalm) Sanderson once stated that we've met or seen a Kandra not in the Mistborn books. The incredible level of thought out detail is what I completely geek out on in his books.