Salsa dancing is an art that relies on cooperation. The owners of LearnSalsa.com take that to heart, collecting an ensemble of talented teachers to lead each of their dancing boot camps. These instructors help as many as 100 students at a time master the basic steps of salsa or bachata. Backed by heart-pumping tunes, they fill entire gymnasiums with the swiveling hips and shuffling steps of aspiring dancers attempting to hone their technique or to build up enough static charge to jump-start a car battery.