I have given formal lessons before but i have taught many younger kids in my neighborhood and at Camp Woodward how to do things from learning to balance and ride to kick-flipping stair sets. A lot of it is being able to encourage the person to push themselves just a little bit farther than they think their capable of. As far as flat ground goes I could things up to about as complicated as a 360 flip or a back side flip. I could also teach many of the basics on a mini ramp or tranny up to about a blunt stall. And the grinds I could teach would go up to about front and back smith grinds and lip slides.