Hi, I started on my own in 2012 from the Geneva train station after having walked about 1/3 of the St. James route from Pamplona, Spain. I walked that with a girl friend and felt very strong and thought I could do this part on my own to Le Puy. Wow, was I mistaken. I'm a woman, now 62, and in pretty good shape. I knew very little French then. It's not like Spain at all. There are Gites along the way, but you are better it you reserve with people that host pilgrims. You need to set those up at least one day before. The first night my German friend in Switzerland called the gite in Beaumont. There was only one in my guide. It took me a while to find the scallop shells in Geneva, but I finally found them based on my French guide. I did get lost but people were very helpful. Many knew English. However, it took me most of the day to get to Beaumont. The gite was great in that I met 4 women and ended up hiking the rest of my trip with one from the next day on. It was good that she knew French and had her own German guidebook.
I suggest you at least get Rick Steve's pocket French book and study some French so you can make phone calls and reserve places for the next day or two. That said, I found the hiking much more challenging with lots of rocks and steep hills. However, it was/is very beautiful country and I fell deeply in love with France. Because it is not traveled a lot, you need to be very careful of some of the difficult areas unless you are a very good hiker. I doubt if I could have done it without my new found companion. We became very close friends and will be meeting in Le Puy this summer to hike some more.
I hope that helps some.