Yes, you can. From 14 March you can use the nationwide Japan Rail Pass on the newly-opened bullet train line from Nagoya to Toyama and Kanazawa. From that date, the local trains along the line on which the Rail Pass was valid are regarded as "legacy lines" and the Rail Pass is no longer valid [...]
No, you cannot buy a Japan Rail Pass in Japan. A Rail Pass Exchange Order MUST be purchased outside Japan, prior to your trip. You then present the Exchange Order at a major station in Japan in order to obtain the actual Rail Pass, which is valid for the designated period (consecutive days). Information about [...]
Japan Rail state that you need a child Rail Pass for children aged 6-11 years only. Children under 6 years do not need a Rail Pass, but without a Rail Pass they may only occupy a seat if it is not required for a fare-paying passenger. If you want your infant aged under 6 years [...]
It depends on how much rail travel you are planning to do, and within what period. If you are just intending to travel on the bullet train from Tokyo to Kyoto and back again, the 7-day Japan Rail Pass is not really worthwhile. But if you are travelling Tokyo-Kyoto-Osaka-Hiroshima-Tokyo within a 7-day period, it's definitely [...]