Go to https://www.datacamp.com/courses/free-introduction-to-r and complete the “Introduction to R” course. If you do not do this, you will have a great deal of trouble this semester, as I will not spend time teaching R in great detail. Do not just rush through it; pay attention to what you are doing and why it works the way it does.
O'Rourke, Kevin, and Jeffrey Williamson (2002) “When did globalization begin?”, European Review of Economic History, Vol. 4. If the link does not work, go to the NU library website and search for the paper. You will have access once you log in through the library site; I simply do not know if this link will ask you to do that or will just fail.
Bartel, Ann, and Nachum Sicherman (1998) “Technological Change and the Skill Acquisition of Young Workers”, Journal of Labor Economics, Vol. 16. This is another one that needs to be accessed through the library. I am again unsure if the link will work. Note that there is an older version of this report easily accessed online, but it is highly technical, so use the version that was actually published in the JLE.