Needed: An Initial Introductory Pre-Semester Orienting Reading for Intermediate Macroeconomics...
I cannot think of anything better than Robert Skidelsky's Keynes: A Very Short Introduction http://amzn.to/2usYwWl, possibly paired with Keynes's own 1931 Unemployment as a World Problem http://www.bradford-delong.com/2016/05/todays-economic-history-john-maynard-keynes-1931-unemployment-as-a-world-problem.html
But there must be something better. What might it be?