I will suggest you to watch videos by Rahul Verma. He is a IIT Bombay student. He is my senior in IITB. I am attaching the link for the same : https://www.youtube.com/playlist?lis...
I know about this, but I needed help with calculus part
Ruby negi
you can go through Dr.Balakrishna viedos of mathematical Physics, he is the best teacher . Also, you can do HK dass book, it is also a nice book. Important topics are Fourier serie...