Step 1: Electrons!
Atoms don’t like to be charged however and they do their best to become neutral. Metals tend to allow their electron clouds to be modified easily, and when you add one electron to a metal atom's cloud another one jumps out into a neighboring atom's cloud. This bumps another electron out of that cloud and a chain reaction is put into place. An electric current is now formed in the conductor, and it will continue until a bumped electron hits a positively charged atom and fills the "hole" in that atom's cloud. This flow from negative to positive is called electricity.