Since I occasionally get people asking me where they can start to learn a more complex and nuanced understanding of the European Middle Ages:
The Bright Ages (by Matthew Gabriele and David Perry) is really good. Two thumbs up, highly recommended, a great intro to "everything was more complicated than you think it was." It's both informative and delightful to read, and the chapter on the First Crusade (on which I did a deep-ish dive recently) had me going YAAAS! YAAAAS! at every other sentence.