Wind turbines have also been around for a long time as wind mills used for pumping water and crushing wheat into flour. Today we use it to turn wind into electricity.
So when wind blows the turbine turns into the wind and the blades spin and turns the low speed shaft. Then it gets geared up in the gearbox and turns the high-speed shaft which drives the generator.
However when there are any hills around wind speeds tend to be very inconsistent. So you either have to make the tower taller which costs more money, or you make the turbines offshore where there are no hills.
So wind turbines aren't very consistent or good in any kind of urban environment, but in a rural, treeless area they could work. There's another problem, a turbine on an 90ft tower with a blade diameter of 23ft would cost $40000 plus an average installation cost of $57000, pretty steep. A system like this would produce 1000-2000kWh of electricity, 70%, up to 90% of your utility bill. So it will pay for itself but that could take 30 years.