https://www.youtube.com/watch?v=kdUiXGuatUo&list=PLJpHiRVHzfhyfAuDcnvdEtd5Ia8XPMiQS English playlist of the intro to study of Hadith
https://aaiil.org/text/books/mali/manualhadith/manualhadith.pdf
https://aaiil.org/text/books/mali/introductionstudyhadith/introductionstudyhadithpdf.shtml
https://aaiil.org/text/books/others/zahidaziz/introductionislam/thehadith.shtml
https://www.alislam.org/books/essence/chap3/chap3.html
https://transatlantech.com/slide/authenticity-of-hadith-islam-ahmadiyya-ljfqay