If you weren't aware there is an important Federal reserve meeting today, where the bank is expected to cut the fed funds rate either 25bps (5.0%) or 50bps (4.75%). "Bps" is a financial term that translates as 1% = 100bps.
You can read our current Fed chairman's views on the Great depression here. It's a bit complicated for someone with no macro, but it will be interesting to see how much you "get" now versus how much you "get" after finishing the course. (Of course, I will explain things in plain english).