I would like to plan and schedule for Paris-Belfort-Verdun-Paris route. I need help selecting in-country travel and lodging. Where do I start?
Local library. Check out several guidebooks covering those areas. All will have recommendations for lodging and transportation options. Also, any DVDs for that region will give a visual for what you may want to see and good. Once you have specify questions concerning lodging, etc., return here.
As Frank mentioned you can get some guide books etc.
RS does have assistance available, for a fee--- https://www.ricksteves.com/travel-help/plan-your-trip-with-our-expert-consultants
No, I am not employed or affiliated with RS.