In Japan, especially around Tokyo, train and subway are useful.
When you arrive at Narita international airport, JR line is useful to go to Chiba university. You can get to Chiba station using Narita line of JR line, and then you have to change to Sobu line (local service). Nishi-Chiba station is the first stop, and Chiba university is just next to the station. In Narita airport, there is also the Keisei line's station, so please be careful to choose JR.
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If you will use a train manytimes, prepaid card "Suica" is useful. You can charge money to Suica and pass automatic ticket gate using Suica. Suica can used in almost all trains, subways and JR EAST bus. The Suica can be purchased in major JR EAST stations at Multifunction Ticket Vending Machines, JR Ticket Offices (Midori-no-madoguchi) and Travel Service Centers for 500 yen.
When you go through the gate, please touch Suica on the panel.
How to use a bus
You can also use Suica when you use a bus. When you get on the bus, touch Suica on the panel. When you get off, touch Suica on the panel near the front door.