Before we get started, I just want to touch on a very basic but extremely important concept: The concept of money? What is money? Money came about as means to easier exchange of goods between two people. Before the invention of money if a farmer had one ton of wheat and he wanted to exchange with a dairy farmer for milk, the two would meet up and discuss how much liters of milks should be given in exchange for that one ton of wheat. The two would reach an agreement and the exchange would take place. However, this barter system made it extremely difficult to trade easily because a) just because you had wheat, and you wanted milk, doesn’t mean that the other person wants your wheat.
So you couldn’t always make a trade. In addition, trying to take your wheat from one place to another to show that you actually have the goods to trade was not very easy and often not very safe. So as time progressed, an idea came about where you would essentially store your goods somewhere and in exchange get a receipt saying that those goods are there. Anybody with that receipt could get the goods. So instead of physically trading goods on the spot, people would start to trade the receipts. This concept of receipts later evolved into the concept of money and the entities issuing the receipts were later on called the banks.
Where am I going with this and what does it have to do with Affiliate marketing? Well based on the background of money, we can see that money is simply a representation of value. People are willing to give their money (or their receipt) for something that they perceive has value. So in other words, money is nothing but the measure of value. If you want money, create value.