I didn’t start in Le Puy, so I can’t really help you with that section, but I can highly recommend the guidebooks that the Confraternity of Saint James puts out—they have one specifically for the Le Puy section of the route, as well as a webpage talking about it.
http://www.csj.org.uk/route-le-puy.htm

People I met later along the Camino were really really happy with their Confraternity guidebook for the Le Puy section. Good luck!