https://shop.elsevier.com/books/computer-organization-and-de...
It's currently 50% off and not only will you learn ARM, and some history about ISAs in general, but you'll learn more about how the computer itself works.
And if ARM isn't a hard requirement, an older edition that uses RISCV as the core ISA is a free download.
https://www.cs.sfu.ca/~ashriram/Courses/CS295/assets/books/H...
Highly recommended.
The first link was the textbook I used for my computer architecture course last semester and I concur. This was the first time our professor taught ARM instead of x86_64 because he believes ARM is the future.
I learned on the MIPS processor, computer organization / architecture one of the most challenging CS courses for me. I don't remember much but I definitely remember the mips pipeline...