Are you down in Yokota? Or Tokyo, as your Location has it? Where do you ride?

I'm keen to learn the tricks of fixed gear. I saw a woman doing little hops yesterday and later, talking to the owner of a shop in Yamate Dori (next to Yoyogi Hachiman shrine, called Second House, learnt it was a technique for setting up the pedal position for what you are about to do. Does that make sense? I speak Japanese but am not familiar with the language used about riding fixed-gear.