Youtube
About as helpful an answer as “book”
https://www.youtube.com/playlist?list=PLF797E961509B4EB5
https://www.youtube.com/playlist?list=PLDesaqWTN6EQ2J4vgsN1H...
https://www.youtube.com/playlist?list=PLDesaqWTN6ESk16YRmzuJ...
I do unironically think the simplest method to learn calculus is to go through a college level textbook. They are usually pretty accessible.