I thought the book was great. Mostly my fault. I stick to DAD tuning and much of the material was for various other tunings. Therefore it’s use for me was limited.
My first thoughts are that it looks like a very good beginner's course in mountain dulcimer. However, in skimming through the book and dipping briefly into some pages, I've found three massive errors. The author assures me that they will be corrected in the next edition, which will make it a much less confusing book for complete beginners. If/when those errors are corrected, it will be worth at least one more star.
Too soon for review
Bing Futch- Method For Beginning Mountain Dulcimer