From delhi if at all you plan to travel by train you need to change train at Kalka then take a bus to Shimla. From Shimla there are buses to jibhi. Best way is either book a car from delhi to jibhi where cost ranges between 5k to 8K.
You can go to the transport website to check how many trains there are and book tickets online. You can refer to https://tunnelrush3.com to know more. I think the operations will be very simple.