I have produced sushi video episodes for About.com. The producer Heidi Dehncke was a wonderful person to work with.
Please check out the below links to learn how to cut avocado and carrot for sushi; how to make nigirizushi; how to make inside out crab roll; how to make sashimi! Also visit About.com for additional episodes.
https://video.about.com/japanesefood/How-to-Cut-Avocado-for-Sushi.htm
https://video.about.com/japanesefood/How-to-Make-Nigiri.htm
https://video.about.com/japanesefood/How-to-Cut-Cucumber-for-Sushi.htm
https://video.about.com/japanesefood/How-to-Cut-Carrots-for-Sushi.htm
Thank you! Hiroko
Thank you!