By air: To rich kinnaur there is no direct airways,but you can reach shimla airport, from there taxi to kinnaur or himachal roadways which is much cheaper.
By bus: Buses are frequently available from shimla to kinnaur either private or government buses. the government buses are ore specious than the private one
Accommodation: well sangla village is the best place to stay with fairly price of accommodation but fair is depends on the month. the April month tourist rush are less so the price was too. leaving in sangla will be the center for chitkul and kamrunag village both.
while in kalpa also accommodation is fair enough. people can stay in recongpeo and go to kalpa. Recong peo is cheaper than kapla and you can get the city essence too
sangla in month of april :800-1000 per day
kalpa in month of april:800-1500 per day