AMP instructions vs Ammeter help!

If electricty is all new, knowing the difference between Volts and amperes is important.
Current flows from high voltage to lower voltage.

Volts are potential energy. Imagine water in a big holding tank on a roof 12.5 feet above the ground. This is similar to a battery with 12.5 Volts. The water in the tank is not flowing, but it has potential to flow. Same idea with the electricity in the battery.
Amps are a measurement of flow. In electricity the flow is called current. If a valve at the bottom of the water tank is opened, water flows into a hose or pipe until it reaches ground. The amount of water flowing can be measured in gallons per minute (or litres/second, etc). The gallons per minute are like amperes of electricity. If we punched a big hole in the water tank, the water coming out would be so much and so fast that it might knock a person down.

Power is the combination of voltage and current. The flow from 12' above the ground makes the power that knocks the guy down.
(Electric power is usually given in Watts. )