Although there are some different tea brewing styles in Turkey, this one is almost common among Turkish people:First put the water into a kettle, put enough tea into a teapot and put the teapot on the kettle.
When the water boils in the kettle, pour some on tea into the teapot. Wait 15 minutes. The tea in the teapot mustn't be boiled but the water in the kettle must be hot. Then pour brewed tea into teacup (or tea glass), half of the cups must be brewed tea and other half the hot water.
Brewing time is longer in Turkey, but they add water to brew and they generally use sugar.