I just read "The Worldly Philosophers" by Robert Heilbroner and I can recommend that. I now have a tab with Marx's "Capital" open and I'm about half way through

I just read "The Worldly Philosophers" by Robert Heilbroner and I can recommend that. I now have a tab with Marx's "Capital" open and I'm about half way through Joseph Schumpeter's "Capitalism, Socialism, and Democracy." For finance, reading the Market Wizards series by Jack Schwager is a great idea because you get really personal and in-depth insights into how successful traders think. I also recently read "Commodity Conversations" by Jonathan Kingsman which is similar to Market Wizards, but tailored to commodities and I can recommend that as well. "The Secrets of Economic Indicators" by Bernard Baumohl is also an interesting overview to macro indicators. I have no idea what constitutes an undergrad level of economics education, I don't recall my economics class being nearly as stimulating as everything I've just listed. Good luck!