Ollie

From Skate - Wiki on Neoseeker

What is the Ollie you may ask? The ollie is the most basic skateboarding trick, yet it is also the most crucial to learn. An ollie is the simplest of aerial maneuvers performed on skateboard. An ollie is performed by popping the skateboard into the air using the back foot to pop the skateboard, and the front foot to level the trick out.