Dear class,
can you send an email to me (wangyicheng1192@gmail.com) so that I can have your email address for sending class messages and materials?
Thanks,
Best,
Yicheng
For the first problem set, a good reference could be the textbook by Dirk Krueger from Upenn (chapter 2). If you have other questions, feel free to stop by my office at 1112.
The link is below:
http://www.ssc.wisc.edu/~aseshadr/econ714/MacroTheory.pdf
Best
Department of Economics