Navigating in Tokyo

Oh man. Before I left, I bought a JR Pass for 14 days and then bought this JR Pass navigational timetable app : Hyperdia. Holy smokes. Am I glad I did!  It is quite difficult to figure out by only the led signs - but with the app, I put the source and destination and whamm-o. Train, track, and time. Totally worth the $3 for 30 days of use. 

Oh, do you see that wifi icon in the screen capture? I'm renting a wifi device from pupuru for my time in JP. It's only been an hour, but already has paid for itself in gangbusters! $4 / day, plus some associated fees. Totally worth it.