There is actually an awful lot of information in the posts on this thread, and I would urge you to look at it carefully. It is likely the best source in English on this trail, which I have walked twice (2007 and 2009), taking the variant up through Huesca to San Juan de la Pena and on to the Camino Aragonese. As the San Jaume association information tells you, there are albergues along the route, as well as inexpensive (and more expensive) accommodation. You may not see any other pilgrims along the way, so if you seek a social Camino, you're in the wrong place. However, the Catalan and Aragonese people are very helpful and hospitable, and you will have a great time. The countryside, while largely flat and bucolic -- especially in the middle-- is charming and an easy walk. Outside population centres, there are no real facilities and you should be careful of your water supplies.