Also look into going to a gymnastics center for some basic classes. There are a lot of gymnastic techniques that are essential for a good traceur, such as rolls, body orientation, proprioceptive/kinesthetic awareness, weight transition, etc.
One of the things that is going to help you in your kong along with the center of gravity noted in the other answer is a concept called "blocking". This is being able to take momentum in one direction and redirect it in a different direction.
This is best exemplified by the vault in gymnastics. The gymnast sprints down the runway, gathering horizontal momentum. They hit the springboard, which starts the transition to vertical, and then their arms plant and "block" the momentum into a vertical direction. This is going to be a vital skill for any traceur.