Hi everybody, I'm taking Quantum Mechanics 1 this semester. Thing is many of my classmates and I feel the professor is horrible and not a good teacher. He is often disorganized and unprepared for class. Problem is there's no way to change him so we're stuck with him. He apparently wants to teach the course focusing on the mathematical formalism and I've been having a difficult time finding texts which resemble what he is doing just so I could follow his class. I really want to understand this subject as it is important for a Physics Major. Can anyone recommend any rigorous quantum mechanics textbooks? Any online courses or video lectures would be awesome as well. By the way, he's been talking about Hilbert space operators, functions on operators like exp(A) where A is an operator and continous and discrete basis (which I did not understand at all). Material which covers those topics would be greatly appreciated.