MIT: Veronica Guerrieri's "Principles of Macroeconomics, L2: Introduction to Macroeconomic Data"

Read these lecture notes, which will provide an introduction to the scope and major topics covered by a course in macroeconomics. This reading represents an outline of the course and adds context. You will gain a solid foundation on which the upcoming units build. For instance, the course will refer numerous times to the four components of the expenditure approach - consumption, investment, government, and net exports - and will elaborate on their causes and consequences, what variables alter them, and what effects they have on aggregate demand, aggregate supply, GDP, and so forth.