How to get from Narita to Kanamachi Tokyo tation via train

So i booked an airbnb located at kanamachi tokyo and the host gave me a guide on how to get there but i am not sure i understand completely

For one, i am not familiar with the train systems in Narita so I am not sure how to comprehend this guide. Can someone walk me through and do you have any information on the estimated amount of fare this trip would take? Thanks a lot in advance.