Join Utah Backcountry Pilots Association, lots of stuff there for members to download which will propagate on your ForeFlight map.
Once you get Utah strips down and are comfortable, join Idaho Aviation Association. There is a lot of info online and they have a must have map/chart available in their store if you are heading into the Idaho backcountry.
I did Idaho for the first time last week…. It is several levels more difficult than the Utah BC stuff. Step up incrementally and you will be good to go.
I was very happy with the 5+ hours of instruction I received flying with Dick Williams last week in Idaho. Idaho backcountry is not the place to go alone on a learning expedition.
