1.Always keep to urself a map of the underground stations. It helps if you know Chinese as its easily identifiable even its in Japanese. 2. Turn your mobile to silent mode. trust me 3. Stay somewhere near to train stations. That will help save time 4. Learn the basic of Japanese language like How Much? 5. Shopping - Harajuku & Shibuya. Shinjuku and Roponggi are more for nightlife adventures 6. Visit Tokyo Tower near Roponggi, Asakusa Temple, a days trip to Mount Fuji and UENO (i think) for Statue of Liberty and Macau ike Casino concept. 7. Loads of fast food chain like Ramen, soba, okonomiyaki, curry rice which is affordable. 8. Try to catch loads of street wierdos at Harajuku only on weekends. They are cool actually. 9. Ginza shopping for high end labels. Akihabara (electric city) for all electrical stuffs and colourful neon lights. U can find those frech maid cafes at Akihabara too 10. Lastly enjoy and take loads of pics. Be sure to bring enough memory cards ya..