Most good Japanese restaurants except Italian, French and other Western dishes, serve an おしぼり "oshibori." It's a moist hand towel for cleaning your hands. So, you can eat sushi with your hands without going to restrooms to wash your hands. read more
Proper etiquette is easy to learn by observing other patrons and asking the staff for help. Use chopsticks or your fingers to pick up the sushi. Dip the fish lightly in soy sauce, eat the sushi in one bite, and follow it with a small slice of ginger. read more