We have a reading list! You mentioned the Book of Five Rings, if you can find the translation by Kenji Tokitsu, it is one of the best. Hagakure is a good addition, as well as The Life Giving Sword. We also recommend to our in person students The Talent Code, it talks about how people learn at a physiological level, as well as Breath, a book by James Nestor on the importance of proper breathing and some methods to do so. Science of Breath is similar but more detailed, albeit a more difficult read. There is also The Unfettered Mind. I forget it's details at the moment, so forgive me. It's early and I've barely begun my coffee. That should keep you busy for a little while, at least. 😁