Economics -

[BeLgaRiOn]

*stays a while and listens*

 

[w1z4rd]

Supply.
Demand.

That's it.

Nope. Way more to it, including things like development, investment, returns on investment and learning about important things like means of production and the economies of scale (and how that can lead to monopolies).

Its a very wide science with lots of use contributions. Just be wary, as with any science there is a lot of pseudoscience. Avoid the austrian school of economics like the plague.