The following three videos will help you get a good understanding of the Aggregate Demand curve and the factors that shift it. Later we will put Aggregate Demand and Aggregate Supply together on the same graph and will analyze the resulting equilibrium and its implications on the economy's health.
Mary J. McGlasson,
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Khan Academy, https://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/national-income-and-price-determinations/aggregate-demand-ap/v/aggregate-demand,
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