What is electricity and what are 3 major ways that it is produced?

Electricity is the flow or potential of electrons , it is produced using 1) hydro electricity (water flows from dam to propel a water wheel connected to an electric motor(alternator) , 2) using burning coal in coal fired stations (uses burning coal to heat water in to steam ,which steam then turns a gas turbine that is connected to an electric generator/alternator 3) using windfarms (uses a giant aerodynamic propeller to turn an alternator(electric motor/generator) from the force of wind.