I struggled for a while to find a good source of information about the journey, this is the best I have found: www.csj.org.uk
I have also found a good list of all the hostels (Albergues) along the way here which I will hopefully be adding to the map above with a list of the one ones I plan to stay at, the ones I actually stay at and any of the others I can list on there!
If you want to start at the end of my walk, you can find that here: JohnVDenley.com/Camino-End
Also, I am now running walking retreats from Santiago to Finisterre, if you are interested in joining me, there is more information here