What exactly do I need to travel to Japan? -

I am a US Permanent resident and am going to become a US citizen in the future, but as of right now I am not. I want to go to Japan to visit for maybe two weeks I figure I would need a passport but what else do I need, I have never traveled internationally. One more thing, I dont know if it matters but I am from Mexico originally.

I don t think you need anything special. If you don t speak japanese maybe a english - japanese dictionary would be good, but most japanese understand some english nowadays. You can get anything you want from Japan if you don t have it, so don t worry too much. Oh you might wanna change some US dollars to yen too.