The book “Quantum Mechanics: Non-Relativistic Theory” by Landau and Lifshitz is a classic and doesn’t need any introduction. The approach is completely different from all other texts available and is a must-read for the serious reader. read more
On advanced quantum mechanics, there are good books are by Gottfried and by Sakurai. Berezin's book is also a great classic. For the path integral, you can read Feynman and Hibbs, but I like Feynman's 1948 Reviews of Modern Physics article more. read more
Griffiths is the ultimate self-study textbook for quantum mechanics. Griffiths is incredibly easy to work through the text and be able to become proficient and elementary quantum mechanics (or electricity and magnetism or particle physics, applying it to his other texts). read more