Good and reasonably priced book to learn QM from on your own.  Nothing fancy and no thrilling unusual insights, just standard Quantum Mechanics presented in a systematic, structured manner.  You need the discipline to go systematically through it and do the problems,  it's not intended just for reading through.  After wearing out a few pens and filled more than a few legal pads with calculations you will be well prepared for advanced graduate-level courses.  Like with any serious QM text,  you should be familiar already with basic sophomore level math like differential equations and linear algebra before diving in.