Money is simply an interface that allows the barter and trade between people for their goods and services. The way it works is, everyone works (lets not turn this into a dole scrounger political thread) and, in order to trade off the produce/service, money acts as measure (for those who play in large guilds, its similar to DKP).
If each person was an individual isolated unit, we would simply need food/water/shelter to survive. But the beauty of society is that some people are better at doing some things than others, so we elect to use the best people to do what they are best at, and everyone else mucks in, and the total produce/service is distributed internally according to what their activity is worth.
So if Bob is an apple producer, Jane is a water filtering specialist and Francis is a builder, by working and trading with each other, they all get apples, water and shelter. Most of business is about maximising on the *demand* for their goods or service, minimising their internal inefficiencies, and therefore becoming higher in overall *profit* that in turn can be traded off against the goods and needs of those who earnt the profit to live and enjoy life as they see fit.
Now, someone can correct me if I am wrong, but things like gold stock etc only came into meaning when countries started bartering with each other, and needed a measure for how to compare the closed economic systems with each other. Money therefore became a standardised way to not only trade internally within the system of a local and national level, but also internationally, by means of currency exchange. Currency exchanges enable the local man, who picks apples for a living, uses the money to buy local water and local shelter, to spend *relatively* the same amount of money on his needs than someone in another country, as long as the efficiencies of his and the other countries businesses were the same.
Perhaps someone who has actually studied some type of business studies can elaborate, I didn't even study it at GCSE
