Week 1
The slides for Day #1 can be found here:
Reading Assignment Here is your reading assignment for Week 1
Read Chapter 5 in The Effect: Research Design and Causality https://theeffectbook.net/ch-Identification.html
Additional Resources If you are struggling with R, I think that the introduction chapters of Learning Statistics with R are really useful, I suggest looking at chapters 3-8: https://learningstatisticswithr.com/book/part-ii-an-introduction-to-r.html