Here is several good sashimi filleting, slicing and tips on Youtube,
Sushi Rolling Technique
FutoMaki = Big Rolls
Kappa maki = Cucumber Rolls
Hope it helps after you taking my sushi and sashimi classes!
And One more tip for Sushi Rice cooking video, I simmer it 13-17 minutes ( it depends how much rice you are cooking) but in this video they ask you to simmer the rice for 20 minutes, after it started boiling.
There is a sushi Introduction class on Saturday 3rd July from 12:00pm-2:00pm £65
It is reasonable price and you learn a lot of deal in 2 hours. Please join!