for people who dont know much about sushi, I usually tell them to start with tuna....it's pretty basic, but ****ing delicious lol.
3 most common ways sushi is served is:
Maki - typically in a seaweed/rice roll, and sliced into multple peices
Sashimi - JUST the fish, like...strips of sliced raw fish, sometimes they serve it over rice and that's called Chirashi
Negiri - Sliced fish served over blobs of sticky rice. it's cool, me gusta....