The Japan Rail Pass is specifically designed for tourists. It offers a convenient and economical way of enjoying rail travel throughout the country, including the famous Bullet trains.
From 1st April 2017, the Japan Rail Pass can be bought in Japan. But the prices are lower if you buy before you go. Example: Yen 29,110 for a 7-day Ordinary pass bought overseas: Yen 33,000 for the same pass bought in Japan after 1st April 2017. So buy the Japan Rail Pass online here from JTB, the Japan specialists, before your trip!
Also, from 1st April 2017, Japanese nationals cannot obtain the Rail Pass.