The easiest and quickest way to get around Japan is by train. If you are visiting Japan, you get get a Japan Rail (JR) pass before you leave for cheaper than you can if you get it in Japan. We got these for our travels but when we were on the plane ride over to Japan we realized that we forgot them!! Luckily my mom was able to FedEx them to us and they got to us in 2 days! Thanks mom!!