Macroeconomics deals with the economy as a whole; you'd be studying about the government's role, GDP, inflation, and other such things.
Micro deals with economics on the business level. Supply and demand, elasticity, utility and the law of diminishing returns are a few things you study in micro.
Macro is easier. The first few chapters in either course are similar, but then of course they divert to their own focus.
Those who can, pay. Those who can't, delay.