Visit to the Kodokan
Take business cards from anywhere that you might want to return to. They will be in both Japanese and English. You can then show them to a cab driver and he/she can take you there.
Always have pen and paper with you - most Japanese can read/write English but are afraid to speak it. If you write it down, they will write down an answer.
Best Way To Get Around:
Walking is the best. The trains are great, but you need to plan, as almost all signs are in Kanji. Cabs work great too!