Hello all, As you can probably tell from the title of this thread, I'm interested in learning about quantum mechanics (hopefully this thread will be ok here instead of in the learning materials section). I currently know a fair amount about the qualitative features and some of the important experiments of the theory, and I think I'm ready to get into the math behind everything. I have experience in linear algebra, multivariable, and complex analysis. Also, I'm looking for a book, not a textbook, and I'm hoping to spend less than $30 (used). Any recommendations?