Planet Hunters gives you, like Galaxy Zoo, a short tutorial, and within a couple of minutes, you're up and running; you're looking at data from the Kepler Mission and looking for planets.
Planet Hunters fornisce,  come Galaxy Zoo, un breve tutorial, e, in un paio di minuti, siete operativi, potete osservare i dati  della Missione Kepler e cercare i pianeti.