I’m not or won’t be a FX trader, but due my current job position I needed a source which could give me a good insight of the FX trader like: terminology, FX market behavior, FX market structure, passible outcomes and the importance of positions. So, I found this book.
For what I necessitated, part I & II were the most important. The book provided me a good introduction about the most important terms and allowed to further look into other resources to keep learning. However, I think, basic stock or FX market knowledge is needed if you are looking to fully grasp all concepts.