The pilot was conducting his first solo circuit and landing. Following the initial touchdown the aircraft ballooned twice, and the pilot was unable to maintain directional control after the final touchdown. The aircraft collided with another glider which was being prepared for launching. Immediately prior to this particular flight, the pilot had successfully completed a check flight with an instructor. It was considered likely that the aircraft had been affected by a crosswind component during the latter stages of the landing, and the pilot had been unable to react in sufficient time to avoid a collision with the parked glider.