TRANSPORTATION
Tokyo Metro Area is served by two large airports: Narita and Haneda. All international carriers, with the exception of China Airlines, use Narita International Airport (formally known as the New Tokyo International Airport) which is 41 miles/66 km from center city. Most domestic air service goes through Haneda. The two airports are connected by a regular bus servicehttp://www.narita-airport.or.jp/airport_e/ OR http://www2f.biglobe.ne.jp/~masaho/us/indexus.htm
Taxis
They generally available at all air and train terminals. As with any of the world's largest cities, they are ubiquitous.
NOTE: Unless you drive left side of the road and understand Japanese language and driving habits, try not to drive.

PUBLIC TRANSIT
Three (not separating the individual private systems) train/metro systems service Tokyo: Shinkansen ('bullet train'), Japan Railways (JR) trains and private trains. Most of the major train lines terminate at Tokyo station on the JR Yamanote line. There are three shinkansen lines connecting Tokyo with the rest of Japan - check out the shinkansen for more details. For day trips to areas such as Kamakura, Nikko, Hakone and Yokohama, private trains are usually the most convenient means of transportation. Various buses go directly to Nagoya, Nara and Kobe. They generally terminate at Tokyo station. From Shinjuku station there are buses to the Fuji and Hakone regions.