Yaw control is achieved through differential cyclic. Pedal input is as for any helo but the control mixing box then causes a lateral cyclic input to the left on one rotorhead and to the right on the other.
Wind direction is rarely a big deal for the Chinny because it mostly has loads of spare power and doesn't have the wind direction issues associated with tail rotor configurations. The only time it's a big deal is when the wind is really strong or the cab doesn't have much power in hand due to weight or density altitude.