Doubtlessly, “Trading in Zone” is one of the best books on trading psychology. I also find “Mastering Trading Psychology” by Andrew Aziz and Mike Baehr helpful.
Yes, “Mastering Trading Psychology” by Andrew Aziz and Mike Baehr is a great and very helpful book to learn forex trading.
I bought it for a few hundred dollars a few decades ago. It was/is a famous book. Unfortunately, I wouldn't classify it as a great book for traders. It is probably great for the publisher/author.
I have a few suggestions: -Trading in the Zone: Master the Market with Confidence, Discipline, and a Winning Attitude -The Black Book of Forex Trading by Paul Langer
Brian Dolan's Currency Trading for Dummies is a book I would suggest. Steve Nison's Japanese Candlestick Charting Techniques. When I first started trading, their books were quite helpful.