“Flying a wingsuit adds considerable complexity to a skydive. The United States Parachute Association(USPA) requires in the Skydivers Information Manual that any jumper flying a wingsuit for the first time have a minimum of 200 freefall skydives, made within the past 18 months, and receive one-on-one instruction from an experienced wing suit jumper, or 500 jumps experience to go without an instructor. Requirements in other nations are similar. Wingsuit manufacturers offer training courses and certify instructors.”

from http://en.m.wikipedia.org/wiki/Wingsuit_flying