3rd step

The third thing you want to learn is to learn how to roll.

Rolling is an essential part of Parkour. You can use a proper roll to break a fall (Its usual role in Parkour)

I have found It difficult to explain, so heres a wiki page that found a way:            http://parkour.wikia.com/wiki/Roll

That being said, I still have some tips:
 * Start low, like from the ground, and work your way up
 * The two most important rolls to learn are the Normal(Breakfall Roll) and the Backwards roll(For recovery)
 * Start on grass or mats, do not start on concrete

After that, you are ready to start on movements.