The Hydraulic Analogy
There are a couple of times especially in engineering where it is easier to think of DC electric circuits in terms of hydraulic circuits and vice versa. And I think in this case it might help you as well.
Current: The amount of water flowing through a section of a pipe over time
Voltage: The difference in pressure between two points in the water circuit.
Resistance: Narrow constrictions offer high resistance and every pipe like every other wire offers resistance to the flow of water.
Power: It is the rate at which the energy stored in the water is used to drive a mechanical device like a water wheel.
Think of it like this: How fast the wheel is going to spin is dependent on the amount of water hitting it (current) and how much pushing this quantity of water does (voltage).
(pressure = force applied / area)
Hope this helps and I am glad that you are finding the blog to be useful. Cheers!
** Where does this analogy fail ? (Very important to know)