Step 5: Practice Steering and Sail Control
Use the tiller or wheel to steer. Push the tiller away from you to turn the bow toward the wind. Pull it toward you to turn away from the wind. If you have a wheel and not a tiller, then it works just like a car. Turn right and go right. Turn left and go left.
Control your sails with sheets (ropes attached to the back corner of the sail - 'the clew' - that adjusts sail angle). Pull in the the sail to go upwind, loosen it to go downwind.
Watch your tell-tales (small ribbons on the leading edge, belly and back edge of sails).
If the tell tales on the leading edge flutter, adjust the sail angle. In very basic terms, when sailing on a beam reach (wind at 90 degrees to the boat) or 'higher' - i.e. closer to the wind direction - you want the tell tales on the leading edge (also called the 'luff') to be flying on both sides of the sail.