I have one too.
Theres heaps of stuff on youtube. Just search agility ladder. Duh.
But does anybody know how to use one effectively? How many times a week should it be used? Only on a speed day? After weights? Before weights for a warm-up? How many sets should one do? Use it until "failure"?
Count, what do you train for? I have my ladder to improve foot speed and quickness.