Lectures and 2022 Material Link - https://iitkgpacin-my.sharepoint.com/:f:/g/personal/ik241168_kgpian_iitkgp_ac_in/EirtD8ijfANLmdA598KyvEYBnQnJnM9CXJd-9K9cHe8pWQ?e=iqGmn6
Lectures Playlist - https://www.youtube.com/watch?v=fLC12N3HsdQ&t=0s
Pro-Tip : PYQ are the most imp resources for any subject , So do them thoroughly before doing anything else