I have just downloaded the book on to my iPad. Some great information and excellent folk songs. I am certainly going to enjoy reading it.
Just one criticism, its a good read, however,looking for a particular song, the name of which you know is not easy. Too many places to look, an index would be a massive improvement. There are links provided, but you have to search through a lot of places to find them.
The pros far outweigh the cons.