Whether you are new to learning about electricity, or just need a quick reminder about the basics, these images can hopefully help clarify how electricity takes charge!
Above, you will see an atom with the electrons moving around. When you think of electric "current," the current is the flow of these electrons.
In the above, you will see an example of DC (Direct Current) power which demonstrates the connection between a light bulb and a battery.
This image is a metaphor for AC (Alternating Current) power which alternates between positive and negative like a wave.
Finally, this image is a metaphor for electricity. Consider that voltage is the pressure, the water is the charge, and the flow of water out of the bottle is current.