E-learning site uses an example of "pushcarts on the beach" to demonstrate a monopolistically competitive market structure and how, as more firms enter the market, price, quantity, and deadweight loss are all affected.

This site provides a great article that explains the gold standard and why it didn't work for the United States and many other nations.

This site examines the relationship between a price taker and a price maker, and the market structure to which each might belong.

An overview of monopoly, oligopoly and duopoly, focusing on the interdependence of firms in an oligopoly, shown through the use of a game tree how these firms are tempted towards the practice of collusion.