Useful material

Casual inference: the Mixtape (2021). by Scott Cunningham
Free, open-access text for causal inference. Printed version Yale University Press.

The Economy (2017). Ebook developed by the CORE project
Free, open access text for introductory undergraduate courses in Economics. Printed version Oxford University Press.

Impact Evaluation in Practice, (2016). by Gertler, P. J., S. Martinez, P. Premand, L.B. Rawlings, and C.M.J. Vermeersch
Published by the World Bank