I walked my first camino from Montserrat to Santiago de Compostela during September - November last year. I went via Zaragossa, and walked into Logrono 21 days after leaving Montserrat. I arrived in SdC after 47 days, including three rest days all up.
I had picked up a guidebook in the bookstore on Montserrat, and largely followed the stages therein. I took a rest day in Zaragossa, and two days over the long Logrono-Cervera stage, stopping at the truck-stop in la Panadella. I also took two days over the 36km Alcanadre-Logrono stage, breaking it at the wonderful and hospitable town of Arrubal (where there is a superb and brand new albergue literally underneath the 15C church).
I saw seven pilgrims to Santiago in those 21 days. Four were cyclists and they would go by quickly on the trail, as they did all the way to SdC. I met two others walking from Montserrat, one to Zaragossa, the other to Logrono. A Belgian guy walking his ninth camino caught up to me at Alcanadre, and he had started in Zaragossa and was walking to SdC. A further pilgrim from Slovakia followed me into Logrono, and we met at at the parish albergue attached to the Santiago de Real Church (recommended!) He had started at Zaragossa as well. I was told of an older French man a day ahead of me, but I never saw him. That's it.
So for 19 of those days I walked alone. I have plenty of English, limited Spanish, limited French, and no Catalan. I managed to get by in Catalonia. The people were very friendly, and interested in a pilgrim, and where I was from. They all recognised a pilgrim with a shell on the back-back!! I walked past orchards as they were getting the apple harvest in and was given apples. In the middle of nowhere the Guarda would appear, stop and ask if I was ok. Train drivers would sound their horn as they went by, and farmers and truck drivers would wave. Plenty of people would ask me to pray for them when I got to Santiago.
There is a great solitude walking from Montserrat, and the silence and space that goes with that. It is good for your head.
There is a definite pilgrm infrastructure on this camino, but it is nowhere near as developed as the
Camino Frances. My impression is that there is still a great respect for the pilgrim, and that care for pilgrims was seen as a good and necessary thing, and that the appearance of a pilgrim was still regarded as a very interesting event. People wanted to help, to see I had lodging for the night, was fed et cetera.
The way-marking was excellent. Arrows everywhere, and really good signage across Catalonia, and then up the Ebro river. The guide book had really good maps (blue cover, Jacobeo? I forget now).
I met nearly 30 pilgrims coming the other way! They were on the new camino ignaciano - a large group of Australians, assorted young Germans, and some Spaniards. In some small towns along the way I would be asked whether I was going to Manresa (the Ignatian camino) or to Santiago! I was greatly helped by the caminoignaciano website - it has great maps and, very helpfully, many suggestions for accomodation. I recommend it. That camino goes through Logrono and travels in the opposite direction all the way to, and past, Montserrat. So, there were often yellow arrows and their orange arows painted together! Be aware of the slight detour to Verdu around Tarrega, and slight divergances around Fraga and near Fuentes de Ebro.
I had WiFi all the way, apart from a hole around Castellnou de Seana. In that town there is a very spartan but clean albergue, and I recommend the famous Cafe Modern, where, for 5 Euro I was presented with the largest plate of food I have ever seriously been offered.
The dogs. Catalan dogs, unlike Galician dogs, are unused to pilgrims. They are very large, very fierce, bark a great deal, and seem quite angry. Yet, without exception, they were all very well chained up, or behind enormous fences. Sometimes they were quite close to me, but always unable to get at me.
It was very hot as I walked in September. And there are some unavoidably long stages, such as Bujaraloz - Pino de Ebro, and Gallur - Tudela.
The whole world changed once I got to Logrono and joined the very busy
Camino Frances.
If you have further questions post them here and I'll try to answer them.