I think you'll have your own reasons for wanting to learn more about using economics as a tool for debate and extemp. Once you begin to catch on you will be astonished at the power of the economic way of thinking for making and rebutting arguments about government, the market, and society. Private ownership promotes responsibility and cooperation. Trade creates wealth. Profits direct businesses toward activities that increase wealth.
Competition increases efficiency and innovation.
Taxation and regulation discourage production and destroy wealth. Political decision-making favors plunder over production. Central planning wastes resources and retards economic progress. Some of these items may seem simplistic or trite. Simple to state, perhaps, but rich in their application to real-world problems.