Any recommendations for books/tutorials/videos or other starting points? I don't know any assembly but wanted to learn 6502 assembly because of how ubiquitous

Any recommendations for books/tutorials/videos or other starting points? I don't know any assembly but wanted to learn 6502 assembly because of how ubiquitous it was in lots of older systems (2600, NES, Apple II, and of course C64 among others). That SMB 3 speed run [1] really blew my mind and made me want to learn more. [1] https://news.ycombinator.com/item?id=24456247 https://news.ycombinator.com/item?id=24456247