I was given a copy of the guide by Jose Rua when I walked in 2011. It had just been published. It was unnecessarily heavy and had a lot of unimportant information, but turned out to be useful every now and then.
http://www.amazon.es/s/ref=nb_sb_no...ipbooks&field-keywords=jose+rua+invierno&tag=
Turns out there is a new edition, published in May 2015, but Amazon.es doesn't have it yet.
http://www.amazon.es/dp/8493949108/
You can get it from the Amigos in Barco -- http://caminodeinvierno.es
For English speakers, I do think that Reb's guide in the resources section (especially once it's updated after this summer's walk) is good enough to get you from Ponferrada to Santiago.
http://www.amazon.es/s/ref=nb_sb_no...ipbooks&field-keywords=jose+rua+invierno&tag=
Turns out there is a new edition, published in May 2015, but Amazon.es doesn't have it yet.
http://www.amazon.es/dp/8493949108/
You can get it from the Amigos in Barco -- http://caminodeinvierno.es
For English speakers, I do think that Reb's guide in the resources section (especially once it's updated after this summer's walk) is good enough to get you from Ponferrada to Santiago.