What are the three main electric conductors?

Most metals conduct electricity. Copper and gold are probably the two best conductors. Steel conducts electricity, but it's an alloy not an element. Some other nonmetals also conduct electricity. Experiments are ongoing with carbon for use in computers. Neon is a gas which allows electricity to flow through it, making neon lights. Today Copper is used more than anything else when electricity must move from one place to another predictably.