F. Gies, "Knights of Medieval Europe" - A recommended guide to the origins and history of medieval knights.
The book will be a commentary on what the knightly world depicted in "Don Quixote" was really like.
The book will also give you a pretty good idea of the beginnings of knighthood and what chivalry is that Don Quixote dedicated to.
The connection between the Crusades and chivalry was particularly interesting.
As a lover of "Don Quixote," I found this book very inspiring and interesting.
I highly recommend this work.