Moving in the Structure Dropdown

Watching Kevin Geary, the genius. He is moving so fast. He seems to be moving up and down the Structure, selecting containers, blocks and so on very fast. Is there a way to move up and down without using the mouse to do the selection? Also, when he selects an item what he selects stays in the middle of his screen. For me it always top justifies and I need to drag it down. Make any sense?