The book is very neatly structured and easy to read. I'm only beginning to learn to play accordion so some of the songs are way too difficult for me, but there's plenty to begin with,
I have since bought 5 more books in the same line (argentinian tango and folk, klezmer and sephardic, frensh folk, scandinavian folk, and eastern european folk tunes for accordion)
the entire range of books is amazing, most have some additional info about the music and related techniques, and all of them are easy to understand, although not all easy to play.
would reccommend highly to anyone who plays accordion or wants to start playing.