The classic text is Nielsen and Chuang's "Quantum Computation and Quantum Information" [0]. Whatever else you choose to supplement this book with, it is worth having in your library.

[0] https://a.co/d/aPsexRB

Nielsen and Chuang has the clearest exposition of quantum mechanics I've seen anywhere. Last year I was trying to learn quantum mechanics, not necessarily quantum computation, just out of a general interest in theoretical physics. I started with physics textbooks (Griffiths and Shankar) but it only really "clicked" for me when I read the first few chapters of Nielsen and Chuang.