Forward one leg when sliding, the other foot on the pedal, the body upright, to maintain a certain inertia before the line. By controlling the left and right foot pedal strength with the rod to control the body balance according to the above steps to practice, I believe you can already ride a straight line distance!
Now you can start practicing turning! Will not walk, how to learn to fly? So the previous exercise is the key, if you can already be very easy to ride a straight line, then the turn is a matter of course.