Video Games Taught Me How To Navigate Through Tokyo (More or Less)
Except for some suboptimal subway exits, I think I'm doing a pretty good job at navigating through Tokyo. In a way, this isn't my first time to the city. I've played Shin Megami Tensei IV, set in a post-apocalyptic, geo-fronted Tokyo. Much of the game involves navigating from one node of the subway to another, and locating the demon-mutated remains of popular tourist spots. It's not a perfect mapping, but it gave me a rough idea on how things are placed - like how Ueno and Akihabara are near each other at the top, and that Roppongi and Shibuya are at the other end.
That's my theory at least. It could also be that the transport grid is arranged along fairly rational lines. And transit information is always available and updated.