Last week's lesson notes gave you a "little taste" of the theories that have contributed to the study of economics; in future lessons we'll study Keynesian, Monetary and Supply Side theories as well. However, I came across this YOUTUBE stream that I thought-though a bit early on in the class- might answer some "curiosities" you might have just now. It provides an overview of various "Economic Schools of Thought" pertaining to Macroeconomics.

https://www.youtube.com/watch?v=tZvjh1dxz08