Amperage and Voltage Question: The Water Pipe Analogy
Don't forget: the water analogy requires closed loops of pipe.   No water pours out anywhere. No pipes change their diameter (no inflation or deflation.)  It's not like a long cup of water.   It's more like a rotating wheel.

An electric circuit is a ring of pipe, full of water, with no bubbles allowed.   Next, add a constriction, and that's a resistor.   Add a water-pump into the ring, and that's a power supply.   The speed of the water is proportional to amperes, with fast rotation being high current.  Voltage is the pressure-difference found across the resistor (or across the pump.)   DC is when the water moves continuously.  AC is when the water wiggles back and forth (yet notice that any resistor heats up, regardless of the flow-direction.)

Parallel circuits are when we add a couple of "T" junctions to our water-ring, so the path splits at one point, then recombines at another.

A similar electricity analogy is the bicycle wheel, where the rubber of the tire becomes the electricity found inside a closed circle of wire.   Push the tire with your hand, so that it spins, and that's the power supply causing a current.   Rub the spinning tire with your thumb, and that's a resistor.  Mechanical energy flows almost instantly, going from your pushing-hand to your rubbing-thumb.  The current starts everywhere, all at once.   But the path of current is a closed circle, with no rubber being consumed.  And, the electrons (the rubber) move slowly, moving like a wheel.  

Electricity isn't a "form of energy," any more than the rubber of a tire is a "form of energy."   The electricity (and the rubber) were already there, ever since the circuit was created.  And, whenever electricity flows, it goes in a complete circle, with none being gained or lost.  Your hand doesn't generate electricity, instead it just causes the existing electricity to start moving.   (And in the water-hoses, the pump doesn't generate any electricity.  It just takes electricity in through one terminal, while spitting electricity out the other terminal at the same time.)