This is a great text for learning terminology such as herbal actions it's easy to read and understand. The discriptions are just long enough so that it does not include excess/repetative words. The materia medica is also written the same way, precise, it may be too brief for more advanced herbalists however for beginners it is perfect. The materia medica is not that big. For a more elaborate "indication" section you will probably have to read research. I use this as a text as a Herbal Science major, I don't think it is very readable for the layman trying to learn herbal medicine or if you are just interested in herbal medicine. It's written like an encyclopedia, so you jump to sections that you want. The first part of the book has plant constituents with drawings of organic molecules. The second part is organized according to body systems. It's very user friendly, the index has pretty much everything you want to find. Fantastic book as a text, I'll be using it for a long time.