Japan Railways (JR) has the most extensive network of train lines running both within and between Japan’s cities. JR is also the company running the shinkansen (bullet train) lines.
Remember that all the Shinkansen lines are operated by JR. While the JR Rail Pass can be used on all the JR lines throughout the country, each JR branch offers their own convenient passes and discount tickets, such as the very convenient JR West Rail Passoffered by JR West. For information on discount tickets check the website of the JR branch operating in the region you’re visiting.
Taking into account that the JR Rail Pass is valid only on JR lines, if you want to save money while traveling around Japan, purchase a JR Rail Pass and try using mostly JR lines in order to move around.
The Tokyo Monorail is a service that connects Hamamatsucho, a station on the Yamanote Line south of Tokyo Station, with Haneda International Aiport. A ride on the Monorail will bring you from Hamamatsucho to Haneda International Airport in less than 20 minutes.
Buy a Japan Rail Pass online….. https://www.jrpass.com/?gclid=EAIaIQobChMI0c66rLy42QIVFkwNCh3UwQEOEAAYAyAAEgKWDfD_BwE