i may leave you this weekend with my old notes in qft since no updates yet re to my exercise notes in qft ok til next week or perhaps this coming sunday evening
https://foxtrotpaparomeo.wordpress.com/category/quantum-field-theory-calculations/
so now, since it is an mwfsat day some things for qft and we have Notes from Prof. Sidney Coleman's Physics 253a: Quantum Field Theory, this is one of my main resource materials for self-refresher courses in qft
https://inspirehep.net/literature/941540
the lectures are compiled into videos
https://www.youtube.com/watch?v=IRDpW7QOyGw&list=PLhsb6tmzSpiwrZuDMyweABm7FShZu3YUv&index=1