This is an excellent guide to dulcimer flatpicking. It starts at the most basic level. Each new arrangement gets progressively more complex. By the end of the book you are doing some very advanced flatpicking. Also, nice selection of favorite tunes and lesser known compositions. Instructional text is clear, concise and easy to follow. This is the best source for flatpicking instruction of which I am aware. Highly recommended.
For those learning to flat pick, this is a great book with with great essential exercises for learning.....highly recommended....
Aaron O'Rourke - Secrets To Successful Flatpicking