This is a pretty good beginner dulcimer book, starting off super simple and progressing one step at a time. It has fewer kindergarten songs than most beginner books, so is probably more palatable to adults. It does come with a cd which records only the first four or five songs though, so only provides limited help for the self-learner.
All in all, a decent book for the beginner which would be more useful to some if the cd contained all the songs in the book.