I...do not understand how electricity works.
Oh come on. Don't be such a baby. Everyone learns in grade school: ice cream trucks leave the positive pole and drive ice creams to the negative pole. The creams keep computers running and the lights on.
(Though this is just a metaphor, study physics you will know the trucks, in fact, drive in the opposite direction, backing up the whole time. )
Of course, everyone tries to resist eating ice cream. This is what gives us Yum's Law of resistance and currants (like raisins.)

