Acknowledgements

BESTEPS (Barcelona Essential Skills Training for Economics PhD Students) is a flagship PhD training project organized at the UB School of Economics and funded by the UB Doctoral School. It is a core component of the training framework of the PhD in Economics program at the University of Barcelona.

The lecturers generously agreed to publish these notes as a public good, but did not review the draft. We are grateful to the following young economists across fields and from various institutions for carefully reading the draft and providing thoughtful feedback (in alphabetical order): Bastian Bruestle (Zurich), Haochi Chen (Dublin), Zhenghao Chen (UCL), Alessandro Ciardo (Barcelona), Britta Hecker (IAB), Guillermo Martínez (CEMFI), Taoyi Sun (Purdue), Robert Włodarski (Cambridge), Jessie Ziyue Zhu (Maastricht). All remaining errors are our own responsibility.