Develop a website where people can exchange books and sell them
The idea is to develop a portal where people can offer their books for free. When another person enters the website and chooses a book, the person that offered it earns 1 point. Then with that point they can "buy" another book. If the person that wants a book doesn't have points, They can buy me some.
Different books have different prices, so books may cost between 1 and 100 points. The idea is to promote exchange of books but offer to buy points so I can earn some money.
Spanish is desirable.
If hoy have new ideas to make it more profitable and attractive, you're welcome.