Chiral Perturbation Theory – Lectures by Oliver Bär

Lecture 1 (Oct. 9, 2020) pdf lectures video recordings  
Lecture 2 (Oct. 16, 2020) pdf
Lecture 3 (Oct. 23, 2020)
pdf
Lecture 4 (Oct. 30, 2020)
pdf

Exercises of Lecture 1,  2,  3, 4